diff --git a/Generics/Instant.hs b/Generics/Instant.hs
deleted file mode 100644
--- a/Generics/Instant.hs
+++ /dev/null
@@ -1,21 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- Top-level module which re-exports the basic combinators and the generic
--- instances for common datatypes.
---
------------------------------------------------------------------------------
-
-module Generics.Instant (
-  module Generics.Instant.Base,
-  ) where
-  
-import Generics.Instant.Base
-import Generics.Instant.Instances ()
diff --git a/Generics/Instant/Base.hs b/Generics/Instant/Base.hs
deleted file mode 100644
--- a/Generics/Instant/Base.hs
+++ /dev/null
@@ -1,84 +0,0 @@
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE TypeFamilies             #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Base
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- This module defines the basic representation types and the conversion
--- functions 'to' and 'from'. A typical instance for a user-defined datatype
--- would be:
--- 
--- > -- Example datatype
--- > data Exp = Const Int | Plus Exp Exp
--- >
--- > -- Auxiliary datatypes for constructor representations
--- > data Const
--- > data Plus
--- > 
--- > instance Constructor Const where conName _ = "Const"
--- > instance Constructor Plus  where conName _ = "Plus"
--- > 
--- > -- Representable instance
--- > instance Representable Exp where
--- >   type Rep Exp = C Const (Var Int) :+: C Plus (Rec Exp :*: Rec Exp)
--- > 
--- >   from (Const n)   = L (C (Var n))
--- >   from (Plus e e') = R (C (Rec e :*: Rec e'))
--- > 
--- >   to (L (C (Var n)))            = Const n
--- >   to (R (C (Rec e :*: Rec e'))) = Plus e e'
--- 
------------------------------------------------------------------------------
-
-module Generics.Instant.Base (
-      U(..), (:+:)(..), (:*:)(..), C(..), Var(..), Rec(..)
-    , Constructor(..), Fixity(..), Associativity(..)
-    , Representable(..)
-  ) where
-
-infixr 5 :+:
-infixr 6 :*:
-
-data U        = U           deriving (Show, Read)
-data a :+: b  = L a | R b   deriving (Show, Read)
-data a :*: b  = a :*: b     deriving (Show, Read)
-newtype C c a = C a         deriving (Show, Read)
-newtype Var a = Var a       deriving (Show, Read)
-newtype Rec a = Rec a       deriving (Show, Read)
-
--- | Class for datatypes that represent data constructors.
--- For non-symbolic constructors, only 'conName' has to be defined.
-class Constructor c where
-  conName   :: t c a -> String
-  conFixity :: t c a -> Fixity
-  conFixity = const Prefix
-  conIsRecord :: t c a -> Bool
-  conIsRecord = const False
-
--- | Datatype to represent the fixity of a constructor. An infix declaration
--- directly corresponds to an application of 'Infix'.
-data Fixity = Prefix | Infix Associativity Int
-  deriving (Eq, Show, Ord, Read)
-
--- | Datatype to represent the associativy of a constructor.
-data Associativity = LeftAssociative | RightAssociative | NotAssociative
-  deriving (Eq, Show, Ord, Read)
-
-
-class Representable a where
-  type Rep a
-  to   :: Rep a -> a
-  from :: a -> Rep a
-  -- defaults
-  {-
-  type Rep a = a -- type synonyms defaults are not yet implemented!
-  to   = id
-  from = id
-  -}
diff --git a/Generics/Instant/Functions.hs b/Generics/Instant/Functions.hs
deleted file mode 100644
--- a/Generics/Instant/Functions.hs
+++ /dev/null
@@ -1,23 +0,0 @@
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Functions
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- This module simply reexports all the generic functions' modules.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Functions (
-    module Generics.Instant.Functions.Empty,
-    module Generics.Instant.Functions.Show,
-    module Generics.Instant.Functions.Eq
-  ) where
-  
-import Generics.Instant.Functions.Empty
-import Generics.Instant.Functions.Show
-import Generics.Instant.Functions.Eq
diff --git a/Generics/Instant/Functions/Empty.hs b/Generics/Instant/Functions/Empty.hs
deleted file mode 100644
--- a/Generics/Instant/Functions/Empty.hs
+++ /dev/null
@@ -1,109 +0,0 @@
-{-# LANGUAGE ScopedTypeVariables      #-}
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE FlexibleContexts         #-}
-{-# LANGUAGE OverlappingInstances     #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Functions.Empty
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- Generically produce a single finite value of a datatype.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Functions.Empty (
-    Empty(..), empty,
-    HasRec(..)
-  ) where
-
-import Generics.Instant.Base
-import Generics.Instant.Instances ()
-
--- Generic empty on Representable (worker)
-class Empty a where
-  empty' :: a
-
-instance Empty U where
-  empty' = U
-  
-instance (HasRec a, Empty a, Empty b) => Empty (a :+: b) where
-  empty' = if hasRec' (empty' :: a) then R empty' else L empty'
-  
-instance (Empty a, Empty b) => Empty (a :*: b) where
-  empty' = empty' :*: empty'
-  
-instance (Empty a) => Empty (C c a) where
-  empty' = C empty'
-
-instance (Empty a) => Empty (Var a) where
-  empty' = Var empty'
-
-instance (Empty a) => Empty (Rec a) where
-  empty' = Rec empty'
-
-instance Empty Int where
-  empty' = 0
-
-instance Empty Integer where
-  empty' = 0
-
-instance Empty Float where
-  empty' = 0
-
-instance Empty Double where
-  empty' = 0
-
-instance Empty Char where
-  empty' = '\NUL'
-  
-instance Empty Bool where
-  empty' = False
-
-
--- Dispatcher
-empty :: (Representable a, Empty (Rep a)) => a
-empty = to empty'
-
--- Adhoc instances
--- none
-
--- Generic instances
-instance (Empty a) => Empty (Maybe a)       where empty' = empty
-instance (Empty a) => Empty [a]             where empty' = empty
-instance (Empty a, Empty b) => Empty (a,b)  where empty' = empty
-
-
---------------------------------------------------------------------------------
--- | We use 'HasRec' to check for recursion in the structure. This is used 
--- to avoid selecting a recursive branch in the sum case for 'Empty'.
-class HasRec a where
-  hasRec' :: a -> Bool
-  hasRec' _ = False
-  
-instance HasRec U
-instance HasRec (Var a)
-
-instance (HasRec a, HasRec b) => HasRec (a :*: b) where
-  hasRec' (a :*: b) = hasRec' a || hasRec' b
-  
-instance (HasRec a, HasRec b) => HasRec (a :+: b) where
-  hasRec' (L x) = hasRec' x
-  hasRec' (R x) = hasRec' x
-
-instance (HasRec a) => HasRec (C c a) where
-  hasRec' (C x) = hasRec' x
-  
-instance HasRec (Rec a) where
-  hasRec' _ = True
-  
-instance HasRec Int
-instance HasRec Integer
-instance HasRec Float
-instance HasRec Double
-instance HasRec Char
diff --git a/Generics/Instant/Functions/Eq.hs b/Generics/Instant/Functions/Eq.hs
deleted file mode 100644
--- a/Generics/Instant/Functions/Eq.hs
+++ /dev/null
@@ -1,66 +0,0 @@
-{-# LANGUAGE FlexibleContexts         #-}
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE OverlappingInstances     #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Functions.Eq
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- The equality function.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Functions.Eq (Eq(..), eq) where
-
-import Generics.Instant.Base
-import Generics.Instant.Instances ()
-
-import Prelude hiding (Eq)
-
--- Generic eq on Representable (worker)
-class Eq a where
-  eq' :: a -> a -> Bool
-
-instance Eq U where
-  eq' U U = True
-  
-instance (Eq a, Eq b) => Eq (a :+: b) where
-  eq' (L x) (L x') = eq' x x'
-  eq' (R x) (R x') = eq' x x'
-  eq' _      _     = False
-  
-instance (Eq a, Eq b) => Eq (a :*: b) where
-  eq' (a :*: b) (a' :*: b') = eq' a a' && eq' b b'
-  
-instance (Eq a) => Eq (C c a) where
-  eq' (C a) (C a') = eq' a a'
-
-instance Eq a => Eq (Var a) where
-  eq' (Var x) (Var x') = eq' x x'
-
-instance (Eq a) => Eq (Rec a) where
-  eq' (Rec x) (Rec x') = eq' x x'
-
--- Dispatcher
-eq :: (Representable a, Eq (Rep a)) => a -> a -> Bool
-eq x y = eq' (from x) (from y)
-
-
--- Adhoc instances
-instance Eq Int      where eq' = (==)
-instance Eq Integer  where eq' = (==)
-instance Eq Float    where eq' = (==)
-instance Eq Double   where eq' = (==)
-instance Eq Char     where eq' = (==)
-instance Eq Bool     where eq' = (==)
-
--- Generic instances
-instance (Eq a) => Eq (Maybe a)    where eq' = eq
-instance (Eq a) => Eq [a]          where eq' = eq
-instance (Eq a, Eq b) => Eq (a, b) where eq' = eq
diff --git a/Generics/Instant/Functions/Show.hs b/Generics/Instant/Functions/Show.hs
deleted file mode 100644
--- a/Generics/Instant/Functions/Show.hs
+++ /dev/null
@@ -1,89 +0,0 @@
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE FlexibleInstances        #-}
-{-# LANGUAGE FlexibleContexts         #-}
-{-# LANGUAGE OverlappingInstances     #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Functions.Show
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- Simplified generic show function.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Functions.Show (Show(..), show) where
-
-import Generics.Instant.Base
-import Generics.Instant.Instances ()
-
-import Prelude hiding (Show, show)
-import qualified Prelude as P (Show, show)
-import Data.List (intersperse)
-
--- Generic show on Representable (worker)
-class Show a where
-  show' :: a -> String
-
-instance Show U where
-  show' U = ""
-  
-instance (Show a, Show b) => Show (a :+: b) where
-  show' (L x) = show' x
-  show' (R x) = show' x
-  
-instance (Show a, Show b) => Show (a :*: b) where
-  show' (a :*: b) = show' a `space` show' b
-  
-instance (Show a, Constructor c) => Show (C c a) where
-  show' c@(C a) | show' a == "" = paren $ conName c
-                | otherwise     = paren $ (conName c) `space` show' a
-
-instance Show a => Show (Var a) where
-  show' (Var x) = show' x
-
-instance Show a => Show (Rec a) where
-  show' (Rec x) = show' x
-
-
--- Dispatcher
-show :: (Representable a, Show (Rep a)) => a -> String
-show = show' . from
-
-
--- Adhoc instances
-instance Show Int      where show' = P.show
-instance Show Integer  where show' = P.show
-instance Show Float    where show' = P.show
-instance Show Double   where show' = P.show
-instance Show Char     where show' = P.show
-instance Show Bool     where show' = P.show
-
-instance Show a => Show [a] where
-  show' = concat . wrap "[" "]" . intersperse "," . map show'
-
-instance Show [Char] where
-  show' = P.show
-
-instance (Show a, Show b) => Show (a, b) where
-  show' (a,b) = "(" ++ show' a ++ "," ++ show' b ++ ")"
-
-
--- Generic instances
-instance (Show a) => Show (Maybe a) where show' = show
-
-
--- Utilities
-space :: String -> String -> String
-space a b = a ++ " " ++ b
-
-paren :: String -> String
-paren x = "(" ++ x ++ ")"
-
-wrap :: a -> a -> [a] -> [a]
-wrap h t l = h:l++[t]
diff --git a/Generics/Instant/Functions/Update.hs b/Generics/Instant/Functions/Update.hs
deleted file mode 100644
--- a/Generics/Instant/Functions/Update.hs
+++ /dev/null
@@ -1,63 +0,0 @@
-{-# LANGUAGE OverlappingInstances     #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Functions.Update
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- Generic update function.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Functions.Update (Update(..), update, MapOn(..)) where
-
-import Generics.Instant.Base
-import Generics.Instant.Instances ()
-
-
--- Generic update on Representable (worker)
-class Update a where
-  update' :: a -> a
-
-instance Update U where
-  update' U = U
-  
-instance (Update a, Update b) => Update (a :+: b) where
-  update' (L x) = L (update' x)
-  update' (R x) = R (update' x)
-  
-instance (Update a, Update b) => Update (a :*: b) where
-  update' (a :*: b) = update' a :*: update' b
-  
-instance (Update a, Constructor c) => Update (C c a) where
-  update' (C a) = C (update' a)
-
-instance Update a => Update (Rec a) where
-  update' (Rec x) = Rec (update' x)
-
-instance (MapOn a) => Update (Var a) where
-  update' (Var x) = Var (mapOn x)
-
--- | This is the function that is applied by 'update' at 'Var' positions.
-class MapOn a where
-  mapOn :: a -> a
-  mapOn = id
-
-
--- Dispatcher
-update :: (Representable a, Update (Rep a)) => a -> a
-update = to . update' . from
-
-
--- Adhoc instances
-
-
--- Generic instances
-instance (MapOn a)          => Update (Maybe a) where update' = update
-instance (MapOn a)          => Update [a]       where update' = update
-instance (MapOn a, MapOn b) => Update (a,b)     where update' = update
diff --git a/Generics/Instant/GDiff.hs b/Generics/Instant/GDiff.hs
deleted file mode 100644
--- a/Generics/Instant/GDiff.hs
+++ /dev/null
@@ -1,257 +0,0 @@
-{-# LANGUAGE GADTs                #-}
-{-# LANGUAGE TypeOperators        #-}
-{-# LANGUAGE FlexibleContexts     #-}
-{-# LANGUAGE ScopedTypeVariables  #-}
-{-# LANGUAGE MagicHash            #-}
-
-module Generics.Instant.GDiff 
-  ( diff, patch, diffLen, GDiff
-  , SEq(..), shallowEqDef
-  , Build(..), buildDef
-  , Children(..), childrenDef
-  , Ex(..)
-  ) where
-
-import Control.Arrow
-import Data.Array
-
-import Data.Typeable
-import GHC.Prim
-
-
--- GP lib
-import Generics.Instant
-
---------------------------------------------------------------------------------
-
-ucast :: a -> b
-ucast = unsafeCoerce#
-
---------------------------------------------------------------------------------
-
-class Children' a where
-  children' :: a -> [Ex]
-  children' _ = []
-
-instance Children' U
-
-instance (Children' a, Children' b) => Children' (a :+: b) where
-  children' (L a) = children' a
-  children' (R a) = children' a
-
-instance (Children' a, Children' b) => Children' (a :*: b) where
-  children' (a :*: b) = children' a ++ children' b 
-
-instance (Children' a) => Children' (C c a) where
-  children' (C a) = children' a
-
-instance (GDiff a) => Children' (Var a) where
-  children' (Var a) = [Ex a]
-
-instance (GDiff a) => Children' (Rec a) where
-  children' (Rec a) = [Ex a]
-
--- | Gets all the immediate children of a term
-class Children a where
-  children :: a -> [Ex]
-  children _ = []
-
-instance Children Char
-instance Children Int
-
-instance (GDiff a) => Children [a] where
-  children []    = []
-  children (h:t) = [Ex h, Ex t]
-
-childrenDef :: (Representable a, Children' (Rep a)) => a -> [Ex]
-childrenDef x = children' (from x)
-
---------------------------------------------------------------------------------
-
-class Build' a where
-  build' :: a -> [Ex] -> Maybe (a, [Ex])
-  build' c l = Just (c,l)
-
-instance Build' U
-
-instance (Build' a, Build' b) => Build' (a :+: b) where
-  build' (L a) l = fmap (first L) (build' a l)
-  build' (R a) l = fmap (first R) (build' a l)
-
-instance (Build' a, Build' b) => Build' (a :*: b) where
-  build' (a :*: b) l = do (r,l') <- build' a l
-                          fmap (first (r :*:)) (build' b l')
-
-instance (Build' a) => Build' (C c a) where
-  build' (C a) l = fmap (first C) (build' a l)
-
-instance (GDiff a) => Build' (Var a) where
-  build' (Var _) []         = Nothing
-  build' (Var _) ((Ex h):t) = cast h >>= return . flip (,) t . Var
-
-instance (GDiff a) => Build' (Rec a) where
-  build' (Rec _) []         = Nothing
-  build' (Rec _) ((Ex h):t) = cast h >>= return . flip (,) t . Rec
-
-
--- | Rebuilds a term, replacing the children with elements from the list
-class Build a where
-  build :: a -> [Ex] -> Maybe (a, [Ex])
-  build c l = Just (c,l)
-
-instance Build Char
-instance Build Int
-
-instance (Typeable a) => Build [a]  where
-  build [] l = Just ([],l)
-  build _ ((Ex h'):(Ex t'):r) = do h <- cast h'
-                                   t <- cast t'
-                                   Just (h:t,r)
-  build _ _ = Nothing
-
-buildDef :: (Representable a, Build' (Rep a)) => a -> [Ex] -> Maybe (a, [Ex])
-buildDef x = fmap (first to) . build' (from x)
-
---------------------------------------------------------------------------------
-
--- Shallow equality
-class SEq' a where
-  shallowEq' :: a -> a -> Bool
-
-instance (SEq' a, SEq' b) => SEq' (a :+: b) where
-  shallowEq' (L x) (L x') = shallowEq' x x'
-  shallowEq' (R x) (R x') = shallowEq' x x'
-  shallowEq' _      _     = False
-  
-instance SEq' (C c a) where
-  shallowEq' _ _ = True
-
-
--- | Shallow equality: compare the constructor name only
-class SEq a where
-  shallowEq :: a -> a -> Bool
-
-instance SEq Char where
-  shallowEq = (==)
-instance SEq Int  where 
-  shallowEq = (==)
-instance SEq [a]  where
-  shallowEq [] [] = True
-  shallowEq (_:_) (_:_) = True
-  shallowEq _ _ = False
-
-shallowEqDef :: (Representable a, SEq' (Rep a)) => a -> a -> Bool
-shallowEqDef x y = shallowEq' (from x) (from y)
-
---------------------------------------------------------------------------------
-
--- | Tying the recursive knot
-class (Typeable a, SEq a, Children a, Build a) => GDiff a
-
-instance GDiff Char
-instance GDiff Int
-instance (GDiff a) => GDiff [a]
-
--- | Existentials
-data Ex where Ex :: (GDiff a) => !a -> Ex
-
-instance Show Ex where
-  -- should improve this
-  show (Ex a) = show (typeOf a)
-
---------------------------------------------------------------------------------
-
--- | Edit actions
-data Edit = Cpy !Ex | Del !Ex | Ins !Ex deriving Show
-
--- | Editscript
-data EditScript = ES !Int# [Edit] deriving Show
-
-editScriptLen :: EditScript -> Int
-editScriptLen (ES _ l) = editScriptLen' l where
-  editScriptLen' []          = 0
-  editScriptLen' ((Cpy _):t) = editScriptLen' t
-  editScriptLen' (_      :t) = 1 + editScriptLen' t
-
-infixr 4 &
-(&) :: EditScript -> EditScript -> EditScript
-l@(ES m _) & r@(ES n _) = if m <=# n then l else r
-
-
--- | Generic patch
-gpatch :: EditScript -> [Ex] -> Maybe [Ex]
-gpatch (ES 0# [])        [] = Just []
-gpatch (ES 0# [])        _  = Nothing
-gpatch (ES n  (Ins x:t)) ys =                 gpatch (ES (n -# 1#) t) ys >>= insert x
-gpatch (ES n  (Del x:t)) ys = delete x ys >>= gpatch (ES (n -# 1#) t)
-gpatch (ES n  (Cpy x:t)) ys = delete x ys >>= gpatch (ES (n -# 1#) t)    >>= insert x
-gpatch _ _ = error "impossible"
-
-insert :: Ex -> [Ex] -> Maybe [Ex]
-insert (Ex x) l = case splitAt (length (children x)) l of
-                    (xs, r) -> build x xs >>= Just . (:r) . Ex . fst
-
-delete :: Ex -> [Ex] -> Maybe [Ex]
-delete _ [] = Nothing
-delete (Ex x) ((Ex h):t)
-  | typeOf x == typeOf h && length (children x) == length (children h)
-  = Just (children h ++ t)
-  | otherwise = Nothing
-
---------------------------------------------------------------------------------
--- Memoization
-type Table = Array (Int,Int) EditScript
-
-gdiffm :: [Ex] -> [Ex] -> EditScript
-gdiffm x y = table ! (length x, length y) where
-  table :: Table
-  table = 
-    array ((0,0),(length x,length y))
-      [ ((m,n),ES 0# []) | m <- [0..length x], n <- [0..length y]] //
-
-    [ ((0,n), add (Ins (y !! (n-1))) (0,n-1))
-    | n <- [1..length y] ] //
-
-    [ ((n,0), add (Del (x !! (n-1))) (n-1,0))
-    | n <- [1..length x] ] //
-
-    [ ((m,n), gen m n) | m <- [1..length x], n <- [1.. length y] ]
-
-  gen m n = case (x !! (m-1), y !! (n-1)) of
-    (Ex x', Ex y') -> (if typeOf x' == typeOf y' && x' `shallowEq` (ucast y')
-                        -- && length xs == length ys -- do we need this?
-                       then (add (Cpy (Ex x')) (m-1,n-1)) & alt
-                       else alt) where
-      alt = add (Del (x !! (m-1))) (m-1,n) &
-            add (Ins (y !! (n-1))) (m,n-1)
-
-  add :: Edit -> (Int,Int) -> EditScript
-  add e (a,b) = case table ! (a,b) of ES n l -> ES (n +# 1#) (e:l)
-
-allChildren :: Ex -> [Ex]
-allChildren (Ex a) = Ex a : concatMap allChildren (children a)
-{-
--- I thought this would use less memory, but apparently it doesn't
-allChildren (Ex x) = ux : concatMap allChildren xs
-  where xs  = children x
-        uxs = map (\(Ex y) -> Ex (undefined `asTypeOf` y)) xs
-        ux  = Ex . fst . fromJust $ build x uxs
--}
-
---------------------------------------------------------------------------------
-
--- Top level functions
--- | Generic diff
-diff :: (GDiff a) => a -> a -> EditScript
-diff x y = gdiffm (reverse (allChildren (Ex x))) (reverse (allChildren (Ex y)))
-
--- | Generic diff
-patch :: (GDiff a) => EditScript -> a -> Maybe a
-patch es x = case gpatch es [Ex x] of
-               Just [Ex h] -> cast h
-               _           -> Nothing
-
--- | Edit distance
-diffLen :: (GDiff a) => a -> a -> Float
-diffLen x y = fromIntegral (editScriptLen (diff x y)) / 
-                fromIntegral (length (allChildren (Ex x)))
diff --git a/Generics/Instant/Instances.hs b/Generics/Instant/Instances.hs
deleted file mode 100644
--- a/Generics/Instant/Instances.hs
+++ /dev/null
@@ -1,111 +0,0 @@
-{-# LANGUAGE EmptyDataDecls           #-}
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE TypeFamilies             #-}
-{-# OPTIONS -fno-warn-orphans         #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.Instances
--- Copyright   :  (c) 2010, Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- This module defines instances of the 'Representable' class for a number of
--- basic Prelude types.
---
------------------------------------------------------------------------------
-
-module Generics.Instant.Instances () where
-
-import Generics.Instant.Base
-  
-instance Representable Int where 
-  type Rep Int = Int
-  to = id
-  from = id
-  
-instance Representable Char where 
-  type Rep Char = Char
-  to = id
-  from = id
-  
-instance Representable Bool where 
-  type Rep Bool = Bool
-  to = id
-  from = id
-
-instance Representable Float where 
-  type Rep Float = Float
-  to = id
-  from = id
-  
-instance Representable U where 
-  type Rep U = U
-  to = id
-  from = id
-
-instance (Representable a, Representable b) => Representable (a :*: b) where 
-  type Rep (a :*: b) = a :*: b
-  to = id
-  from = id
-
-instance (Representable a, Representable b) => Representable (a :+: b) where 
-  type Rep (a :+: b) = a :+: b
-  to = id
-  from = id
-  
-instance Representable a => Representable (C c a) where 
-  type Rep (C c a) = C c a
-  to = id
-  from = id
-  
-instance Representable a => Representable (Var a) where 
-  type Rep (Var a) = Var a
-  to = id
-  from = id
-
-instance Representable a => Representable (Rec a) where 
-  type Rep (Rec a) = Rec a
-  to = id
-  from = id
-
--- Lists
-instance Representable [a] where
-  type Rep [a] = C List_Nil_ U :+: C List_Cons_ (Var a :*: Rec [a])
-  from []                           = L (C U)
-  from (a:as)                       = R (C (Var a :*: Rec as))
-  to (L (C U))                  = []
-  to (R (C (Var a :*: Rec as))) = (a:as)
-
-data List_Nil_
-instance Constructor List_Nil_  where conName _ = "[]"
-data List_Cons_
-instance Constructor List_Cons_  where
-  conName _   = ":"
-  conFixity _ = Infix RightAssociative 5
-
--- Maybe
-instance Representable (Maybe a) where
-  type Rep (Maybe a) = C Maybe_Nothing_ U :+: C Maybe_Just_ (Var a)
-  from Nothing           = L (C U)
-  from (Just x)          = R (C (Var x))
-  to (L (C U))       = Nothing
-  to (R (C (Var x))) = Just x
-  
-data Maybe_Nothing_
-instance Constructor Maybe_Nothing_  where conName _ = "Nothing"
-data Maybe_Just_
-instance Constructor Maybe_Just_  where conName _ = "Just"
-
--- Pairs
-instance Representable (a,b) where
-  type Rep (a,b) = C Tuple_Pair_ (Var a :*: Var b)
-  from (a,b)                   = C (Var a :*: Var b)
-  to (C (Var a :*: Var b)) = (a,b)
-
-
-data Tuple_Pair_
-instance Constructor Tuple_Pair_ where conName _ = "," -- Prefix?
diff --git a/Generics/Instant/TH.hs b/Generics/Instant/TH.hs
deleted file mode 100644
--- a/Generics/Instant/TH.hs
+++ /dev/null
@@ -1,332 +0,0 @@
-{-# LANGUAGE TemplateHaskell, CPP #-}
-{-# OPTIONS_GHC -w           #-}
-
------------------------------------------------------------------------------
--- |
--- Module      :  Generics.Instant.TH
--- Copyright   :  (c) 2010 Universiteit Utrecht
--- License     :  BSD3
---
--- Maintainer  :  generics@haskell.org
--- Stability   :  experimental
--- Portability :  non-portable
---
--- This module contains Template Haskell code that can be used to
--- automatically generate the boilerplate code for the generic deriving
--- library.
------------------------------------------------------------------------------
-
--- Adapted from Generics.Deriving.TH
-module Generics.Instant.TH (
-      deriveAll
-    , deriveConstructors
-    , deriveRepresentable
-    , deriveRep
-    , simplInstance
-  ) where
-
-import Generics.Instant.Base
-
-import Language.Haskell.TH hiding (Fixity())
-import Language.Haskell.TH.Syntax (Lift(..))
-
-import Data.List (intercalate)
-import Control.Monad
-
-
--- | Given the names of a generic class, a type to instantiate, a function in
--- the class and the default implementation, generates the code for a basic
--- generic instance.
-simplInstance :: Name -> Name -> Name -> Name -> Q [Dec]
-simplInstance cl ty fn df = do
-  i <- reify (genRepName ty)
-  (ClassOpI _ t _ _) <- reify fn
-  let -- Only works for types with a single parameter
-      subst (ForallT lvs cxt ty) x = subst ty x
-      subst (VarT _) x             = ConT x
-      subst (AppT t1 t2) x         = AppT (subst t1 x) (subst t2 x)
-      subst (SigT ty k) x          = SigT (subst ty x) k
-      subst y _                    = y
-  prg <- pragSpecD df (return (subst t ty))
-  fmap (: [{-prg-}]) $ instanceD (cxt []) (conT cl `appT` conT ty)
-    [funD fn [clause [] (normalB (varE df)) []]]
-
--- | Given the type and the name (as string) for the type to derive,
--- generate the 'Constructor' instances and the 'Representable' instance.
-deriveAll :: Name -> Q [Dec]
-deriveAll n =
-  do a <- deriveConstructors n
-     b <- deriveRepresentable n
-     return (a ++ b)
-
--- | Given a datatype name, derive datatypes and 
--- instances of class 'Constructor'.
-deriveConstructors :: Name -> Q [Dec]
-deriveConstructors = constrInstance
-
--- | Given the type and the name (as string) for the Representable type
--- synonym to derive, generate the 'Representable' instance.
-deriveRepresentable :: Name -> Q [Dec]
-deriveRepresentable n = do
-    rep <- deriveRep n
-    inst <- deriveInst n
-    return $ rep ++ inst
-
--- | Derive only the 'Rep' type synonym. Not needed if 'deriveRepresentable'
--- is used.
-deriveRep :: Name -> Q [Dec]
-deriveRep n = do
-  i <- reify n
-  fmap (:[]) $ tySynD (genRepName n) (typeVariables i) (repType n)
-
-deriveInst :: Name -> Q [Dec]
-deriveInst t = do
-  i <- reify t
-  let typ q = return $ foldl (\a -> AppT a . VarT . tyVarBndrToName) (ConT q) 
-                (typeVariables i)
-      prg1 = pragInlD (mkName "from") (inlineSpecPhase True False True 1)
-      prg2 = pragInlD (mkName "to")   (inlineSpecPhase True False True 1)
-  fcs <- mkFrom t 1 0 t
-  tcs <- mkTo   t 1 0 t
-  liftM (:[]) $
-    instanceD (cxt [])
-      (conT ''Representable `appT` typ t)
-        [ tySynInstD ''Rep [typ t] (typ (genRepName t))
-        , {-prg1, prg2,-} funD 'from fcs, funD 'to tcs]
-
-constrInstance :: Name -> Q [Dec]
-constrInstance n = do
-  i <- reify n
-  case i of
-    TyConI (DataD    _ n _ cs _) -> mkInstance n cs
-    TyConI (NewtypeD _ n _ c  _) -> mkInstance n [c]
-    _ -> return []
-  where
-    mkInstance n cs = do
-      ds <- mapM (mkConstrData n) cs
-      is <- mapM (mkConstrInstance n) cs
-      return $ ds ++ is
-
-typeVariables :: Info -> [TyVarBndr]
-typeVariables (TyConI (DataD    _ _ tv _ _)) = tv
-typeVariables (TyConI (NewtypeD _ _ tv _ _)) = tv
-typeVariables _                           = []
-
-tyVarBndrToName :: TyVarBndr -> Name
-tyVarBndrToName (PlainTV  name)   = name
-tyVarBndrToName (KindedTV name _) = name
-
-stripRecordNames :: Con -> Con
-stripRecordNames (RecC n f) =
-  NormalC n (map (\(_, s, t) -> (s, t)) f)
-stripRecordNames c = c
-
-genName :: [Name] -> Name
-genName = mkName . (++"_") . intercalate "_" . map nameBase
-
-genRepName :: Name -> Name
-genRepName = mkName . (++"_") . ("Rep"  ++) . nameBase
-
-mkConstrData :: Name -> Con -> Q Dec
-mkConstrData dt (NormalC n _) =
-  dataD (cxt []) (genName [dt, n]) [] [] [] 
-mkConstrData dt r@(RecC _ _) =
-  mkConstrData dt (stripRecordNames r)
-mkConstrData dt (InfixC t1 n t2) =
-  mkConstrData dt (NormalC n [t1,t2])
-
-instance Lift Fixity where
-  lift Prefix      = conE 'Prefix
-  lift (Infix a n) = conE 'Infix `appE` [| a |] `appE` [| n |]
-
-instance Lift Associativity where
-  lift LeftAssociative  = conE 'LeftAssociative
-  lift RightAssociative = conE 'RightAssociative
-  lift NotAssociative   = conE 'NotAssociative
-
-mkConstrInstance :: Name -> Con -> Q Dec
-mkConstrInstance dt (NormalC n _) = mkConstrInstanceWith dt n []
-mkConstrInstance dt (RecC    n _) = mkConstrInstanceWith dt n
-      [ funD 'conIsRecord [clause [wildP] (normalB (conE 'True)) []]]
-mkConstrInstance dt (InfixC t1 n t2) =
-    do
-      i <- reify n
-      let fi = case i of
-                 DataConI _ _ _ f -> convertFixity f
-                 _ -> Prefix
-      instanceD (cxt []) (appT (conT ''Constructor) (conT $ genName [dt, n]))
-        [funD 'conName   [clause [wildP] (normalB (stringE (nameBase n))) []],
-         funD 'conFixity [clause [wildP] (normalB [| fi |]) []]]
-  where
-    convertFixity (Fixity n d) = Infix (convertDirection d) n
-    convertDirection InfixL = LeftAssociative
-    convertDirection InfixR = RightAssociative
-    convertDirection InfixN = NotAssociative
-
-mkConstrInstanceWith :: Name -> Name -> [Q Dec] -> Q Dec
-mkConstrInstanceWith dt n extra = 
-  instanceD (cxt []) (appT (conT ''Constructor) (conT $ genName [dt, n]))
-    (funD 'conName [clause [wildP] (normalB (stringE (nameBase n))) []] : extra)
-
-repType :: Name -> Q Type
-repType n =
-    do
-      -- runIO $ putStrLn $ "processing " ++ show n
-      i <- reify n
-      let b = case i of
-                TyConI (DataD _ dt vs cs _) ->
-                  (foldr1' sum (error "Empty datatypes are not supported.")
-                    (map (repCon (dt, map tyVarBndrToName vs)) cs))
-                TyConI (NewtypeD _ dt vs c _) ->
-                  repCon (dt, map tyVarBndrToName vs) c
-                TyConI (TySynD t _ _) -> error "type synonym?" 
-                _ -> error "unknown construct" 
-      --appT b (conT $ mkName (nameBase n))
-      b where
-    sum :: Q Type -> Q Type -> Q Type
-    sum a b = conT ''(:+:) `appT` a `appT` b
-
-
-repCon :: (Name, [Name]) -> Con -> Q Type
-repCon (dt, vs) (NormalC n []) =
-    conT ''C `appT` (conT $ genName [dt, n]) `appT` conT ''U
-repCon (dt, vs) (NormalC n fs) =
-    conT ''C `appT` (conT $ genName [dt, n]) `appT` 
-     (foldr1 prod (map (repField (dt, vs) . snd) fs)) where
-    prod :: Q Type -> Q Type -> Q Type
-    prod a b = conT ''(:*:) `appT` a `appT` b
-repCon (dt, vs) r@(RecC n []) =
-    conT ''C `appT` (conT $ genName [dt, n]) `appT` conT ''U
-repCon (dt, vs) r@(RecC n fs) =
-    conT ''C `appT` (conT $ genName [dt, n]) `appT` 
-      (foldr1 prod (map (repField' (dt, vs) n) fs)) where
-    prod :: Q Type -> Q Type -> Q Type
-    prod a b = conT ''(:*:) `appT` a `appT` b
-
-repCon d (InfixC t1 n t2) = repCon d (NormalC n [t1,t2])
-
---dataDeclToType :: (Name, [Name]) -> Type
---dataDeclToType (dt, vs) = foldl (\a b -> AppT a (VarT b)) (ConT dt) vs
-
-repField :: (Name, [Name]) -> Type -> Q Type
---repField d t | t == dataDeclToType d = conT ''I
-repField d t = conT ''Rec `appT` return t
-
-repField' :: (Name, [Name]) -> Name -> (Name, Strict, Type) -> Q Type
---repField' d ns (_, _, t) | t == dataDeclToType d = conT ''I
-repField' (dt, vs) ns (f, _, t) = conT ''Rec `appT` return t
--- Note: we should generate Var too, at some point
-
-
-mkFrom :: Name -> Int -> Int -> Name -> Q [Q Clause]
-mkFrom ns m i n =
-    do
-      -- runIO $ putStrLn $ "processing " ++ show n
-      let wrapE e = lrE m i e
-      i <- reify n
-      let b = case i of
-                TyConI (DataD _ dt vs cs _) ->
-                  zipWith (fromCon wrapE ns (dt, map tyVarBndrToName vs)
-                    (length cs)) [0..] cs
-                TyConI (NewtypeD _ dt vs c _) ->
-                  [fromCon wrapE ns (dt, map tyVarBndrToName vs) 1 0 c]
-                TyConI (TySynD t _ _) -> error "type synonym?" 
-                  -- [clause [varP (field 0)] (normalB (wrapE $ conE 'K1 `appE` varE (field 0))) []]
-                _ -> error "unknown construct"
-      return b
-
-mkTo :: Name -> Int -> Int -> Name -> Q [Q Clause]
-mkTo ns m i n =
-    do
-      -- runIO $ putStrLn $ "processing " ++ show n
-      let wrapP p = lrP m i p
-      i <- reify n
-      let b = case i of
-                TyConI (DataD _ dt vs cs _) ->
-                  zipWith (toCon wrapP ns (dt, map tyVarBndrToName vs)
-                    (length cs)) [0..] cs
-                TyConI (NewtypeD _ dt vs c _) ->
-                  [toCon wrapP ns (dt, map tyVarBndrToName vs) 1 0 c]
-                TyConI (TySynD t _ _) -> error "type synonym?" 
-                  -- [clause [wrapP $ conP 'K1 [varP (field 0)]] (normalB $ varE (field 0)) []]
-                _ -> error "unknown construct" 
-      return b
-
-fromCon :: (Q Exp -> Q Exp) -> Name -> (Name, [Name]) -> Int -> Int -> Con -> Q Clause
-fromCon wrap ns (dt, vs) m i (NormalC cn []) =
-  clause
-    [conP cn []]
-    (normalB $ wrap $ lrE m i $ appE (conE 'C) $ conE 'U) []
-fromCon wrap ns (dt, vs) m i (NormalC cn fs) =
-  -- runIO (putStrLn ("constructor " ++ show ix)) >>
-  clause
-    [conP cn (map (varP . field) [0..length fs - 1])]
-    (normalB $ wrap $ lrE m i $ conE 'C `appE` 
-      foldr1 prod (zipWith (fromField (dt, vs)) [0..] (map snd fs))) []
-  where prod x y = conE '(:*:) `appE` x `appE` y
-fromCon wrap ns (dt, vs) m i r@(RecC cn []) =
-  clause
-    [conP cn []]
-    (normalB $ wrap $ lrE m i $ conE 'C `appE` (conE 'U)) []
-fromCon wrap ns (dt, vs) m i r@(RecC cn fs) =
-  clause
-    [conP cn (map (varP . field) [0..length fs - 1])]
-    (normalB $ wrap $ lrE m i $ conE 'C `appE` 
-      foldr1 prod (zipWith (fromField (dt, vs)) [0..] (map trd fs))) []
-  where prod x y = conE '(:*:) `appE` x `appE` y
-fromCon wrap ns (dt, vs) m i (InfixC t1 cn t2) =
-  fromCon wrap ns (dt, vs) m i (NormalC cn [t1,t2])
-
-fromField :: (Name, [Name]) -> Int -> Type -> Q Exp
---fromField (dt, vs) nr t | t == dataDeclToType (dt, vs) = conE 'I `appE` varE (field nr)
-fromField (dt, vs) nr t = conE 'Rec `appE` varE (field nr)
-
-toCon :: (Q Pat -> Q Pat) -> Name -> (Name, [Name]) -> Int -> Int -> Con -> Q Clause
-toCon wrap ns (dt, vs) m i (NormalC cn []) =
-    clause
-      [wrap $ lrP m i $ conP 'C [conP 'U []]]
-      (normalB $ conE cn) []
-toCon wrap ns (dt, vs) m i (NormalC cn fs) =
-    -- runIO (putStrLn ("constructor " ++ show ix)) >>
-    clause
-      [wrap $ lrP m i $ conP 'C
-        [foldr1 prod (zipWith (toField (dt, vs)) [0..] (map snd fs))]]
-      (normalB $ foldl appE (conE cn) (map (varE . field) [0..length fs - 1])) []
-  where prod x y = conP '(:*:) [x,y]
-toCon wrap ns (dt, vs) m i r@(RecC cn []) =
-    clause
-      [wrap $ lrP m i $ conP 'U []]
-      (normalB $ conE cn) []
-toCon wrap ns (dt, vs) m i r@(RecC cn fs) =
-    clause
-      [wrap $ lrP m i $ conP 'C
-        [foldr1 prod (zipWith (toField (dt, vs)) [0..] (map trd fs))]]
-      (normalB $ foldl appE (conE cn) (map (varE . field) [0..length fs - 1])) []
-  where prod x y = conP '(:*:) [x,y]
-toCon wrap ns (dt, vs) m i (InfixC t1 cn t2) =
-  toCon wrap ns (dt, vs) m i (NormalC cn [t1,t2])
-
-toField :: (Name, [Name]) -> Int -> Type -> Q Pat
---toField (dt, vs) nr t | t == dataDeclToType (dt, vs) = conP 'I [varP (field nr)]
-toField (dt, vs) nr t = conP 'Rec [varP (field nr)]
-
-
-field :: Int -> Name
-field n = mkName $ "f" ++ show n
-
-lrP :: Int -> Int -> (Q Pat -> Q Pat)
-lrP 1 0 p = p
-lrP m 0 p = conP 'L [p]
-lrP m i p = conP 'R [lrP (m-1) (i-1) p]
-
-lrE :: Int -> Int -> (Q Exp -> Q Exp)
-lrE 1 0 e = e
-lrE m 0 e = conE 'L `appE` e
-lrE m i e = conE 'R `appE` lrE (m-1) (i-1) e
-
-trd (_,_,c) = c
-
--- | Variant of foldr1 which returns a special element for empty lists
-foldr1' f x [] = x
-foldr1' _ _ [x] = x
-foldr1' f x (h:t) = f h (foldr1' f x t)
diff --git a/HarmTrace.cabal b/HarmTrace.cabal
--- a/HarmTrace.cabal
+++ b/HarmTrace.cabal
@@ -1,91 +1,46 @@
-name:                   HarmTrace
-version:                0.4
-synopsis:               HarmTrace: Harmony Analysis and Retrieval of Music
-description:            HarmTrace: Harmony Analysis and Retrieval of Music 
-                        with Type-level Representations of Abstract
-                        Chords Entities
-                        .
-                        This is the first public release of HarmTrace, a system
-                        for automatically analysing the harmony of music
-                        sequences. HarmTrace is described in the paper:
-                        .
-                        * José Pedro Magalhães and W. Bas de Haas.
-                        /Experience Report: Functional Modelling of Musical Harmony./
-                        International Conference on Functional Programming,
-                        2011.
-                        <http://dreixel.net/research/pdf/fmmh.pdf>
-
-copyright:              (c) 2010--2011 Universiteit Utrecht
-license:                OtherLicense
-license-file:           LICENSE
-author:                 W. Bas de Haas and José Pedro Magalhães
-stability:              experimental
-maintainer:             bash@cs.uu.nl, jpm@cs.uu.nl
-category:               Music
-build-type:             Simple
-cabal-version:          >= 1.6
-tested-with:            GHC == 7.0.3
-
-executable harmtrace
-  hs-source-dirs:       .
-  other-modules:        Generics.Instant
-                        Generics.Instant.Base
-                        Generics.Instant.Functions
-                        Generics.Instant.GDiff
-                        Generics.Instant.Instances
-                        Generics.Instant.TH
-                        Generics.Instant.Functions.Empty
-                        Generics.Instant.Functions.Eq
-                        Generics.Instant.Functions.Show
-                        Generics.Instant.Functions.Update
-
-                        Text.ParserCombinators.UU
-                        Text.ParserCombinators.UU.BasicInstances
-                        Text.ParserCombinators.UU.Core
-                        Text.ParserCombinators.UU.Derived
-                        Text.ParserCombinators.UU.Parsing
-                        Text.ParserCombinators.UU.BasicInstances.List
-                        Text.ParserCombinators.UU.BasicInstances.String
-
-                        MIR.Instances
-                        MIR.Run
-                        MIR.GeneratedInstances.GeneratedInstances
-                        MIR.GeneratedInstances.GeneratedInstance0
-                        MIR.GeneratedInstances.GeneratedInstance1
-                        MIR.GeneratedInstances.GeneratedInstance2
-                        MIR.GeneratedInstances.GeneratedInstance3
-                        MIR.GeneratedInstances.GeneratedInstance4
-                        MIR.GeneratedInstances.GeneratedInstance5
-                        MIR.GeneratedInstances.GeneratedInstance6
-                        MIR.GeneratedInstances.GeneratedInstance7
-                        MIR.GeneratedInstances.GeneratedInstance8
-                        MIR.GeneratedInstances.GeneratedInstance9
-                        MIR.GeneratedInstances.GeneratedInstance10
-                        MIR.GeneratedInstances.GeneratedInstance11
-                        MIR.GeneratedInstances.GeneratedInstance12
-                        MIR.GeneratedInstances.GeneratedInstance13
-                        MIR.GeneratedInstances.GeneratedInstance14
-                        MIR.HarmGram.MIR
-                        MIR.HarmGram.ParserChord
-                        MIR.HarmGram.ShowChord
-                        MIR.HarmGram.Tokenizer
-                        MIR.HarmGram.TypeLevel
-                        MIR.Matching.GDiff
-                        MIR.Matching.Standard
-
-  main-is:              Main.hs
-
-  build-depends:        base >= 4.2 && < 4.4, template-haskell >=2.4 && <2.6,
-                        mtl, directory, filepath, array, parallel >= 3,
-                        Diff == 0.1.*, parseargs >= 0.1.3.2, 
-                        regex-tdfa == 1.1.*, process >= 1.0,
-                        uu-parsinglib == 2.7.1, ListLike >= 3.0.1,
-                        vector == 0.7.*, deepseq,
-                        -- temporary
-                        containers, syb, ghc-prim
-  ghc-options:          -Wall
-                        -O2 -fno-spec-constr-count -funbox-strict-fields
-                        -fcontext-stack=50
-                        -threaded -feager-blackholing -rtsopts
-
-  ghc-prof-options:     -auto-all
+name:                   HarmTrace
+version:                0.5
+synopsis:               Harmony Analysis and Retrieval of Music
+description:            HarmTrace: Harmony Analysis and Retrieval of Music 
+                        with Type-level Representations of Abstract
+                        Chords Entities
+                        .
+                        We present HarmTrace, a system
+                        for automatically analysing the harmony of music
+                        sequences. HarmTrace is described in the paper:
+                        .
+                        * José Pedro Magalhães and W. Bas de Haas.
+                        /Experience Report: Functional Modelling of Musical Harmony./
+                        International Conference on Functional Programming,
+                        2011.
+                        <http://dreixel.net/research/pdf/fmmh.pdf>
+
+copyright:              (c) 2010--2011 Universiteit Utrecht
+license:                OtherLicense
+license-file:           LICENSE
+author:                 W. Bas de Haas and José Pedro Magalhães
+stability:              experimental
+maintainer:             bash@cs.uu.nl, jpm@cs.uu.nl
+homepage:               http://www.cs.uu.nl/wiki/GenericProgramming/HarmTrace
+category:               Music
+build-type:             Simple
+cabal-version:          >= 1.6
+tested-with:            GHC == 7.0.3
+
+executable harmtrace
+  hs-source-dirs:       src
+  main-is:              Main.hs
+  build-depends:        base >= 4.3 && < 4.4, template-haskell >=2.5 && <2.6,
+                        mtl, directory, filepath, array, parallel >= 3,
+                        Diff == 0.1.*, parseargs >= 0.1.3.2, 
+                        regex-tdfa == 1.1.*, process >= 1.0,
+                        uu-parsinglib == 2.7.1, ListLike >= 3.0.1,
+                        vector == 0.7.*, deepseq,
+                        instant-generics >= 0.3.1 && < 0.4, binary == 0.5.*
+
+  ghc-options:          -Wall
+                        -O2 -fno-spec-constr-count -funbox-strict-fields
+                        -fcontext-stack=50
+                        -threaded -feager-blackholing -rtsopts
+
+  ghc-prof-options:     -auto-all
diff --git a/LICENSE b/LICENSE
--- a/LICENSE
+++ b/LICENSE
@@ -1,1 +1,1 @@
-This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
+This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/3.0/ or send a letter to Creative Commons, 444 Castro Street, Suite 900, Mountain View, California, 94041, USA.
diff --git a/MIR/GeneratedInstances/GeneratedInstance0.hs b/MIR/GeneratedInstances/GeneratedInstance0.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance0.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance0 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance1()
-
-$(deriveAll ''Piece)
-$(simplInstance ''ParseG ''Piece 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''Piece 'showChord 'showChordDefault)
-$(simplInstance ''Children ''Piece 'children 'childrenDef)
-$(simplInstance ''Build ''Piece 'build 'buildDef)
-$(simplInstance ''SEq ''Piece 'shallowEq 'shallowEqDef)
-instance GDiff Piece
diff --git a/MIR/GeneratedInstances/GeneratedInstance1.hs b/MIR/GeneratedInstances/GeneratedInstance1.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance1.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance1 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance2()
-
-$(deriveAll ''Phrase)
-$(simplInstance ''ParseG ''Phrase 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''Phrase 'showChord 'showChordDefault)
-$(simplInstance ''Children ''Phrase 'children 'childrenDef)
-$(simplInstance ''Build ''Phrase 'build 'buildDef)
-$(simplInstance ''SEq ''Phrase 'shallowEq 'shallowEqDef)
-instance GDiff Phrase
diff --git a/MIR/GeneratedInstances/GeneratedInstance10.hs b/MIR/GeneratedInstances/GeneratedInstance10.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance10.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance10 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance11()
-
-$(deriveAll ''SMin)
-$(simplInstance ''ParseG ''SMin 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''SMin 'showChord 'showChordDefault)
-$(simplInstance ''Children ''SMin 'children 'childrenDef)
-$(simplInstance ''Build ''SMin 'build 'buildDef)
-$(simplInstance ''SEq ''SMin 'shallowEq 'shallowEqDef)
-instance GDiff SMin
diff --git a/MIR/GeneratedInstances/GeneratedInstance11.hs b/MIR/GeneratedInstances/GeneratedInstance11.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance11.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance11 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance12()
-
-$(deriveAll ''DiatVm)
-$(simplInstance ''ParseG ''DiatVm 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''DiatVm 'showChord 'showChordDefault)
-$(simplInstance ''Children ''DiatVm 'children 'childrenDef)
-$(simplInstance ''Build ''DiatVm 'build 'buildDef)
-$(simplInstance ''SEq ''DiatVm 'shallowEq 'shallowEqDef)
-instance GDiff DiatVm
diff --git a/MIR/GeneratedInstances/GeneratedInstance12.hs b/MIR/GeneratedInstances/GeneratedInstance12.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance12.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance12 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance13()
-
-$(deriveAll ''SMinBorrow)
-$(simplInstance ''ParseG ''SMinBorrow 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''SMinBorrow 'showChord 'showChordDefault)
-$(simplInstance ''Children ''SMinBorrow 'children 'childrenDef)
-$(simplInstance ''Build ''SMinBorrow 'build 'buildDef)
-$(simplInstance ''SEq ''SMinBorrow 'shallowEq 'shallowEqDef)
-instance GDiff SMinBorrow
diff --git a/MIR/GeneratedInstances/GeneratedInstance13.hs b/MIR/GeneratedInstances/GeneratedInstance13.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance13.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance13 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance14()
-
-$(deriveAll ''TMajBorrow)
-$(simplInstance ''ParseG ''TMajBorrow 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''TMajBorrow 'showChord 'showChordDefault)
-$(simplInstance ''Children ''TMajBorrow 'children 'childrenDef)
-$(simplInstance ''Build ''TMajBorrow 'build 'buildDef)
-$(simplInstance ''SEq ''TMajBorrow 'shallowEq 'shallowEqDef)
-instance GDiff TMajBorrow
diff --git a/MIR/GeneratedInstances/GeneratedInstance14.hs b/MIR/GeneratedInstances/GeneratedInstance14.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance14.hs
+++ /dev/null
@@ -1,8 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance14 where
-
-import MIR.Instances ()
diff --git a/MIR/GeneratedInstances/GeneratedInstance2.hs b/MIR/GeneratedInstances/GeneratedInstance2.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance2.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance2 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance3()
-
-$(deriveAll ''PhraseMin)
-$(simplInstance ''ParseG ''PhraseMin 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''PhraseMin 'showChord 'showChordDefault)
-$(simplInstance ''Children ''PhraseMin 'children 'childrenDef)
-$(simplInstance ''Build ''PhraseMin 'build 'buildDef)
-$(simplInstance ''SEq ''PhraseMin 'shallowEq 'shallowEqDef)
-instance GDiff PhraseMin
diff --git a/MIR/GeneratedInstances/GeneratedInstance3.hs b/MIR/GeneratedInstances/GeneratedInstance3.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance3.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance3 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance4()
-
-$(deriveAll ''TMin)
-$(simplInstance ''ParseG ''TMin 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''TMin 'showChord 'showChordDefault)
-$(simplInstance ''Children ''TMin 'children 'childrenDef)
-$(simplInstance ''Build ''TMin 'build 'buildDef)
-$(simplInstance ''SEq ''TMin 'shallowEq 'shallowEqDef)
-instance GDiff TMin
diff --git a/MIR/GeneratedInstances/GeneratedInstance4.hs b/MIR/GeneratedInstances/GeneratedInstance4.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance4.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance4 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance5()
-
-$(deriveAll ''Ton)
-$(simplInstance ''ParseG ''Ton 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''Ton 'showChord 'showChordDefault)
-$(simplInstance ''Children ''Ton 'children 'childrenDef)
-$(simplInstance ''Build ''Ton 'build 'buildDef)
-$(simplInstance ''SEq ''Ton 'shallowEq 'shallowEqDef)
-instance GDiff Ton
diff --git a/MIR/GeneratedInstances/GeneratedInstance5.hs b/MIR/GeneratedInstances/GeneratedInstance5.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance5.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance5 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance6()
-
-$(deriveAll ''Dom)
-$(simplInstance ''ParseG ''Dom 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''Dom 'showChord 'showChordDefault)
-$(simplInstance ''Children ''Dom 'children 'childrenDef)
-$(simplInstance ''Build ''Dom 'build 'buildDef)
-$(simplInstance ''SEq ''Dom 'shallowEq 'shallowEqDef)
-instance GDiff Dom
diff --git a/MIR/GeneratedInstances/GeneratedInstance6.hs b/MIR/GeneratedInstances/GeneratedInstance6.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance6.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance6 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance7()
-
-$(deriveAll ''DMinBorrow)
-$(simplInstance ''ParseG ''DMinBorrow 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''DMinBorrow 'showChord 'showChordDefault)
-$(simplInstance ''Children ''DMinBorrow 'children 'childrenDef)
-$(simplInstance ''Build ''DMinBorrow 'build 'buildDef)
-$(simplInstance ''SEq ''DMinBorrow 'shallowEq 'shallowEqDef)
-instance GDiff DMinBorrow
diff --git a/MIR/GeneratedInstances/GeneratedInstance7.hs b/MIR/GeneratedInstances/GeneratedInstance7.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance7.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance7 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance8()
-
-$(deriveAll ''SDom)
-$(simplInstance ''ParseG ''SDom 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''SDom 'showChord 'showChordDefault)
-$(simplInstance ''Children ''SDom 'children 'childrenDef)
-$(simplInstance ''Build ''SDom 'build 'buildDef)
-$(simplInstance ''SEq ''SDom 'shallowEq 'shallowEqDef)
-instance GDiff SDom
diff --git a/MIR/GeneratedInstances/GeneratedInstance8.hs b/MIR/GeneratedInstances/GeneratedInstance8.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance8.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance8 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance9()
-
-$(deriveAll ''DMin)
-$(simplInstance ''ParseG ''DMin 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''DMin 'showChord 'showChordDefault)
-$(simplInstance ''Children ''DMin 'children 'childrenDef)
-$(simplInstance ''Build ''DMin 'build 'buildDef)
-$(simplInstance ''SEq ''DMin 'shallowEq 'shallowEqDef)
-instance GDiff DMin
diff --git a/MIR/GeneratedInstances/GeneratedInstance9.hs b/MIR/GeneratedInstances/GeneratedInstance9.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstance9.hs
+++ /dev/null
@@ -1,24 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstance9 where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.Matching.GDiff
-import MIR.HarmGram.MIR
-import MIR.GeneratedInstances.GeneratedInstance10()
-
-$(deriveAll ''DiatV)
-$(simplInstance ''ParseG ''DiatV 'parseG 'parseGdefault)
-$(simplInstance ''ShowChord ''DiatV 'showChord 'showChordDefault)
-$(simplInstance ''Children ''DiatV 'children 'childrenDef)
-$(simplInstance ''Build ''DiatV 'build 'buildDef)
-$(simplInstance ''SEq ''DiatV 'shallowEq 'shallowEqDef)
-instance GDiff DiatV
diff --git a/MIR/GeneratedInstances/GeneratedInstances.hs b/MIR/GeneratedInstances/GeneratedInstances.hs
deleted file mode 100644
--- a/MIR/GeneratedInstances/GeneratedInstances.hs
+++ /dev/null
@@ -1,21 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeFamilies           #-}
-
-module MIR.GeneratedInstances.GeneratedInstances where
-
-import MIR.GeneratedInstances.GeneratedInstance0()
-import MIR.GeneratedInstances.GeneratedInstance1()
-import MIR.GeneratedInstances.GeneratedInstance2()
-import MIR.GeneratedInstances.GeneratedInstance3()
-import MIR.GeneratedInstances.GeneratedInstance4()
-import MIR.GeneratedInstances.GeneratedInstance5()
-import MIR.GeneratedInstances.GeneratedInstance6()
-import MIR.GeneratedInstances.GeneratedInstance7()
-import MIR.GeneratedInstances.GeneratedInstance8()
-import MIR.GeneratedInstances.GeneratedInstance9()
-import MIR.GeneratedInstances.GeneratedInstance10()
-import MIR.GeneratedInstances.GeneratedInstance11()
-import MIR.GeneratedInstances.GeneratedInstance12()
-import MIR.GeneratedInstances.GeneratedInstance13()
diff --git a/MIR/HarmGram/MIR.hs b/MIR/HarmGram/MIR.hs
deleted file mode 100644
--- a/MIR/HarmGram/MIR.hs
+++ /dev/null
@@ -1,339 +0,0 @@
-{-# LANGUAGE TemplateHaskell          #-}
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE EmptyDataDecls           #-}
-{-# LANGUAGE TypeSynonymInstances     #-}
-{-# LANGUAGE FlexibleInstances        #-}
-{-# LANGUAGE ScopedTypeVariables      #-}
-{-# LANGUAGE MultiParamTypeClasses    #-}
-{-# LANGUAGE TypeFamilies             #-}
-{-# LANGUAGE UndecidableInstances     #-}
-{-# LANGUAGE GADTs                    #-}
-{-# LANGUAGE CPP                      #-}
-{-# LANGUAGE DeriveDataTypeable       #-}
-
-module MIR.HarmGram.MIR where
-
-import MIR.HarmGram.TypeLevel
-
-import MIR.HarmGram.Tokenizer hiding (D)
-import Language.Haskell.TH.Syntax (Name)
-
-import Data.Typeable
-
---------------------------------------------------------------------------------
--- Musical structure as a datatype
---------------------------------------------------------------------------------
-
--- High level structure
-data Piece = Piece     [Phrase] 
-           | Piece_min [PhraseMin] 
-  deriving Typeable
-
--- The Prase level           
-data Phrase     = PT Ton
-                | PD Dom
-  deriving Typeable
-data PhraseMin  = PT_m TMin
-                | PD_m DMin
-  deriving Typeable
-                
--- Harmonic categories for pieces in major keys
--- Tonic in major
-data Ton  = T_2 (SD I MajClass)
-          | Tbls_0 (Final I DomClass)
-          | T_3 (Final I MajClass) (Final IV  MajClass) (Final I MajClass)
-          | T_4 (Final I MajClass) (Final I   DimClass) (Final I MajClass)
-  deriving Typeable
-
--- Dominant in major    
-data Dom  = D_1 SDom Dom 
-          | Dm_0 DMinBorrow 
-          | D_2 (SD V DomClass)
-          | D_3 (SD V MajClass)
-          | D_4 (SD VII DimClass)
-          | D_5 (Final V DomClass) (Final V DimClass) (Final V DomClass)   
-  deriving Typeable
-
--- Subdominant in major          
-data SDom = S_1  DiatV
-          | Sbls_0 (SD IV DomClass) (SD I DomClass)
-          | Sm_0 SMinBorrow
-          | S_2 (SD II MinClass)
-          | S_3 (SD IV MajClass)
-          | S_4 (SD VI MinClass) -- maybe substitute by sec dom??
-          | S_5 (SD III MinClass) (Final IV MajClass) 
-          | S_6 (SD II DomClass) (Final II MinClass) -- pretty printing???
-  deriving Typeable
-
--- account for diatonic succession          
-data DiatV  = Vd_1 (SD III MinClass) (Final VI  MinClass)
-            | Vd_2 (SD IV  MajClass) (Final VII MinClass)  
-  deriving Typeable
-
--- Harmonic categories for pieces in minor keys
-data TMin = Tm_2 (SD I MinClass)
-          | Tm_3 (Final I MinClass) (Final IV  MinClass) (Final I MinClass)
-          | T_0 TMajBorrow
-  deriving Typeable
-
-data TMajBorrow = 
-            Tpar (SD IIIb MajClass)
-  deriving Typeable
-          
-data DMin = Dm_1 SMin DMin
-          | Dm_2 (SD V DomClass)
-          | Dm_3 (SD V MajClass)      
-          -- | Dm_4 (Final VIIb DomClass)   
-          | Dm_5 (SD IIb  MajClass)   -- Neapolitan 
-  deriving Typeable
-
--- Borrowings from minor in a major key
-data DMinBorrow =      
-            Dm_4' (Final VIIb DomClass)   
-          | Dm_5' (SD IIb  MajClass)   -- Neapolitan 
-  deriving Typeable
- 
-data SMin = Sm_1 DiatVm
-          | Sm_2 (SD II MinClass)
-          | Sm_3 (SD IV MinClass)
-          | Sm_4 (SD VIb MajClass)
-          | Sm_5 (SD II DomClass) (Final II MinClass) -- pretty printing???
-  deriving Typeable
- 
- -- Borrowings from minor in a major key
-data SMinBorrow = 
-            Sm_3' (SD IV MinClass)
-  deriving Typeable
-
-data DiatVm  = Vdm_1  (SD IIIb MajClass) (Final VIb MajClass)
-             | Vdm_2  (SD IV  MinClass)  (Final VII DomClass)  
-             -- | Vd_m2 (SD VI MajClass)  (Final II MinClass)
-  deriving Typeable
-
-         
--- Limit secondary dominants to a few levels
-type SD deg clss = Base_SD deg clss T5
-
--- a type that can be substituted by its tritone sub and diminished 7b9
-type TritMinVSub deg clss = Base_Final deg clss T2
-
--- A Scale degree that can only trnaslate to a surface chord
--- (or a dim chord transformation of a diminshed surface chord
-type Final deg clss = Surface_Chord deg clss T4
-
-
--- Datatypes for clustering harmonic degrees
-data Base_SD deg clss :: * -> * where
-  Base_SD      :: Min5    deg clss  n           
-               -> Base_SD deg clss (Su n)
-  -- Rule for explaining perfect secondary dominants
-  Cons_Vdom :: Base_SD (VDom deg) DomClass n -> Min5 deg clss n
-               -> Base_SD deg clss (Su n)             
-  deriving Typeable
-
--- One case only allowed (Tritone or Cons_Vmin)
-type Min5 deg clss n = Base_Vmin deg clss n
-
-data Base_Vmin deg clss :: * -> * where
-  -- No minor fifth
-  Base_Vmin :: TritMinVSub deg clss             
-            -> Base_Vmin   deg clss (Su n)
-  -- Minor fifth insertion
-  Cons_Vmin :: Base_SD  (VMin deg) MinClass     n  -> TritMinVSub deg DomClass 
-            -> Base_Vmin      deg  DomClass (Su n)
-  deriving Typeable
-            
-            
-data Base_Final deg :: * -> * -> * where
-  -- Just a "normal", final degree. The Strings are the original input.
-  Base_Final     :: Final deg clss -> Base_Final deg clss (Su n)
-  -- Tritone substitution
-  Final_Tritone  :: Base_Final (Tritone deg) DomClass n
-                 -> Base_Final deg DomClass (Su n)   
-  Final_Dim_Trit :: Base_Final (Tritone deg) DimClass n
-                 -> Base_Final deg DomClass (Su n)     
-  deriving Typeable         
-
--- Diminished tritone substitution accounting for diminished chord transistions
-data Surface_Chord deg :: * -> * -> * where
-  Surface_Chord  :: Degree -> [(Class, String)] 
-                 -> Surface_Chord deg clss    (Su n)            
-  Dim_Chord_Trns :: Surface_Chord (MinThird deg) DimClass n
-                 -> Surface_Chord deg DimClass (Su n)  
-  deriving Typeable    
-
---------------------------------------------------------------------------------
--- Type Level Scale Degrees
---------------------------------------------------------------------------------
-
--- Classes (at the type level)
-data MajClass deriving Typeable
-data MinClass deriving Typeable
-data DomClass deriving Typeable
-data DimClass deriving Typeable
-
--- Classes (at the value level)
-data Class = Class ClassType Shorthand deriving Typeable
-
-instance Show Class where show (Class ct sh) = show ct
-
-data ClassType = MajClass | MinClass | DomClass | DimClass
-
-instance Show ClassType where
-  show (MajClass) = ""
-  show (MinClass) = "m"
-  show (DomClass) = "7"
-  show (DimClass) = "0"
-
--- Degrees (at the type level)
-data I deriving Typeable
-data Ib deriving Typeable
-data Is deriving Typeable
-data II deriving Typeable
-data IIb deriving Typeable
-data IIs deriving Typeable
-data III deriving Typeable
-data IIIb deriving Typeable
-data IIIs deriving Typeable
-data IV deriving Typeable
-data IVb deriving Typeable
-data IVs deriving Typeable
-data V deriving Typeable
-data Vb deriving Typeable
-data Vs deriving Typeable
-data VI deriving Typeable
-data VIb deriving Typeable
-data VIs deriving Typeable
-data VII deriving Typeable
-data VIIb deriving Typeable
-data VIIs deriving Typeable
-
--- Used when we don't want to consider certain possibilities
-data Imp deriving Typeable
-
--- Degrees at the value level are in Tokenizer
--- Type to value conversions
-class ToClass clss where
-  toClass :: clss -> ClassType
-
-instance ToClass MajClass where toClass _ = MajClass
-instance ToClass MinClass where toClass _ = MinClass
-instance ToClass DomClass where toClass _ = DomClass
-instance ToClass DimClass where toClass _ = DimClass
-
--- The class doesn't really matter, since the degree will be impossible to parse
-instance ToClass Imp where toClass _ = DimClass
-
-class ToDegree deg where
-  toDegree :: deg -> Degree
-
-instance ToDegree I     where toDegree _ = Degree Nothing 1
-instance ToDegree II    where toDegree _ = Degree Nothing 2
-instance ToDegree III   where toDegree _ = Degree Nothing 3
-instance ToDegree IV    where toDegree _ = Degree Nothing 4
-instance ToDegree V     where toDegree _ = Degree Nothing 5
-instance ToDegree VI    where toDegree _ = Degree Nothing 6
-instance ToDegree VII   where toDegree _ = Degree Nothing 7
-instance ToDegree Ib    where toDegree _ = Degree (Just Fl) 1
-instance ToDegree IIb   where toDegree _ = Degree (Just Fl) 2
-instance ToDegree IIIb  where toDegree _ = Degree (Just Fl) 3
-instance ToDegree IVb   where toDegree _ = Degree (Just Fl) 4
-instance ToDegree Vb    where toDegree _ = Degree (Just Fl) 5
-instance ToDegree VIb   where toDegree _ = Degree (Just Fl) 6
-instance ToDegree VIIb  where toDegree _ = Degree (Just Fl) 7
-instance ToDegree IIs   where toDegree _ = Degree (Just Sh) 2
-instance ToDegree IIIs  where toDegree _ = Degree (Just Sh) 3
-instance ToDegree IVs   where toDegree _ = Degree (Just Sh) 4
-instance ToDegree Vs    where toDegree _ = Degree (Just Sh) 5
-instance ToDegree VIs   where toDegree _ = Degree (Just Sh) 6
-instance ToDegree VIIs  where toDegree _ = Degree (Just Sh) 7
-
--- Can't ever parse degree 42 (TODO: what about error correction?...)
-instance ToDegree Imp where toDegree _ = Degree Nothing 42
-
-
---------------------------------------------------------------------------------
--- Type Families for Relative Scale Degrees
---------------------------------------------------------------------------------
--- Perfect fifths (class is always Dom)
--- See http://en.wikipedia.org/wiki/Circle_of_fifths
-type family VDom deg :: *
-
-type instance VDom I     = Imp -- interferes with dom 
-type instance VDom IIb   = VIb
-type instance VDom II    = VI 
-type instance VDom IIIb  = VIIb -- interferes with Dm_3
-type instance VDom III   = VII
-type instance VDom IV    = I
-type instance VDom IVs   = IIb
-type instance VDom V     = II -- interferes with Sm_1
-type instance VDom VIb   = IIIb
-type instance VDom VI    = III
-type instance VDom VIIb  = IV
-type instance VDom VII   = IVs
-type instance VDom Imp   = Imp
-
--- Perfect fifths for the minor case (this is an additional
--- type family to controll the reduction of ambiguities
--- specifically in the minor case)
-type family VMin deg :: *
-type instance VMin I     = V 
-type instance VMin IIb   = VIb
-type instance VMin II    = VI --Imp -- VI interferes with sub 
-type instance VMin IIIb  = VIIb
-type instance VMin III   = VII
-type instance VMin IV    = I
-type instance VMin IVs   = IIb
-type instance VMin V     = Imp -- II interferes with sub
-type instance VMin VIb   = IIIb
-type instance VMin VI    = III
-type instance VMin VIIb  = IV
-type instance VMin VII   = IVs
-type instance VMin Imp   = Imp
-
--- The tritone substitution
--- See http://en.wikipedia.org/wiki/Tritone_substitution
-type family Tritone deg :: *
-type instance Tritone I     = IVs
-type instance Tritone IVs   = I
-
--- type instance Tritone Is    = V
-type instance Tritone IIb   = V
-type instance Tritone V     = IIb 
-
-type instance Tritone II    = VIb
-type instance Tritone VIb   = II
-
-type instance Tritone IIIb  = VI
-type instance Tritone VI    = IIIb
-
-type instance Tritone III   = VIIb -- Interferes with VIIb from minor
-type instance Tritone VIIb  = III 
-
-type instance Tritone IV    = VII
-type instance Tritone VII   = IV
-
-type instance Tritone Imp   = Imp
-
-
-type family MinThird deg :: *
-type instance MinThird I     = IIIb 
-type instance MinThird IIb   = III
-type instance MinThird II    = IV
-type instance MinThird IIIb  = IVs
-type instance MinThird III   = V
-type instance MinThird IV    = VIb
-type instance MinThird IVs   = VI
-type instance MinThird V     = VIIb 
-type instance MinThird VIb   = VII
-type instance MinThird VI    = I
-type instance MinThird VIIb  = IIb
-type instance MinThird VII   = II
-type instance MinThird Imp   = Imp
-
--- Belongs in Instances, but needs to be here due to staging restrictions
-allTypes :: [Name]
-allTypes = [ ''Phrase, ''PhraseMin, ''TMin, ''Ton 
-           , ''Dom, ''DMinBorrow, ''SDom, ''DMin, ''DiatV, ''SMin, ''DiatVm 
-           , ''SMinBorrow, ''TMajBorrow
-           ]
diff --git a/MIR/HarmGram/ParserChord.hs b/MIR/HarmGram/ParserChord.hs
deleted file mode 100644
--- a/MIR/HarmGram/ParserChord.hs
+++ /dev/null
@@ -1,86 +0,0 @@
-{-# LANGUAGE TypeOperators          #-}
-{-# LANGUAGE TypeSynonymInstances   #-}
-{-# LANGUAGE FlexibleInstances      #-}
-{-# LANGUAGE FlexibleContexts       #-}
-{-# LANGUAGE TypeFamilies           #-}
-{-# LANGUAGE MultiParamTypeClasses  #-}
-{-# LANGUAGE OverlappingInstances   #-}
-{-# LANGUAGE ScopedTypeVariables    #-}
-
--- Semi-generic parser for chords
-module MIR.HarmGram.ParserChord where
-
-
--- Parser stuff
-import Text.ParserCombinators.UU hiding (T)
-import Text.ParserCombinators.UU.BasicInstances hiding (head)
-import Text.ParserCombinators.UU.BasicInstances.List
-
--- Generics stuff
-import Generics.Instant.Base as G
-
--- Music stuff
-import MIR.HarmGram.Tokenizer
-
-
---------------------------------------------------------------------------------
--- The generic part of the parser
---------------------------------------------------------------------------------
-
---type PMusic a = Parser [ChordDegree] a (Int, Int)
--- type Parser a b c = Stream a d => P (Str d a c) b
-type PMusic a = P (Str ChordDegree [ChordDegree] (Int, Int)) a
-
-class Parse' f where
-  parse' :: PMusic f
-
-instance Parse' U where
-  {- INLINE parse' #-}
-  parse' = pure U
-
-instance (ParseG a) => Parse' (Rec a) where
-  {- INLINE parse' #-}
-  parse' = Rec <$> parseG
-
--- Not really necessary because TH is not generating any Var, but anyway
-instance (ParseG a) => Parse' (Var a) where
-  {- INLINE parse' #-}
-  parse' = Var <$> parseG
-
-instance (Constructor c, Parse' f) => Parse' (G.C c f) where
-  {- INLINE parse' #-}
-  parse' = G.C <$> parse' <?> "Constructor " ++ conName (undefined :: C c f)
-
-instance (Parse' f, Parse' g) => Parse' (f :+: g) where
-  {- INLINE parse' #-}
-  parse' = L <$> parse' <|> R <$> parse'
-
-instance (Parse' f, Parse' g) => Parse' (f :*: g) where
-  {- INLINE parse' #-}
-  parse' = (:*:) <$> parse' <*> parse'
-
-
-class ParseG a where
-  {- INLINE parseG #-}
-  parseG :: PMusic a
-
-instance (ParseG a) => ParseG [a] where
-  {- INLINE parseG #-}
-  parseG = pList1 parseG
-  -- We should use non-greedy parsing here, else the final Dom is never parsed
-  -- as such.
-  -- parseG = pList1_ng parseG
-
-instance (ParseG a) => ParseG (Maybe a) where
-  {- INLINE parseG #-}
-  parseG = pMaybe parseG
-
-{- INLINE parseGdefault #-}
-parseGdefault :: (Representable a, Parse' (Rep a)) => PMusic a
--- parseGdefault = fmap (to . head) (amb parse')
--- Previously we used:
-parseGdefault = fmap to parse'
--- This gave rise to many ambiguities. Now we allow parse' to be ambiguous
--- (note that the sum case uses <|>) but then pick only the very first tree
--- from all the possible results. It remains to be seen if the first tree is
--- the best...
diff --git a/MIR/HarmGram/ShowChord.hs b/MIR/HarmGram/ShowChord.hs
deleted file mode 100644
--- a/MIR/HarmGram/ShowChord.hs
+++ /dev/null
@@ -1,83 +0,0 @@
-{-# LANGUAGE TypeOperators            #-}
-{-# LANGUAGE FlexibleInstances        #-}
-{-# LANGUAGE FlexibleContexts         #-}
-{-# LANGUAGE OverlappingInstances     #-}
-
-module MIR.HarmGram.ShowChord (ShowChord(..), showChordDefault, paren) where
-
-import Generics.Instant.Base
-
--- Generic show for chords on Representable (worker)
-class ShowChord a where
-  showChord :: a -> ShowS
-
-instance ShowChord U where
-  {- INLINE showChord #-}
-  showChord U = showString ""
-  
-instance (ShowChord a, ShowChord b) => ShowChord (a :+: b) where
-  {- INLINE showChord #-}
-  showChord (L x) = showChord x
-  showChord (R x) = showChord x
-  
-instance (ShowChord a, ShowChord b) => ShowChord (a :*: b) where
-  {- INLINE showChord #-}
-  showChord (a :*: b) = showChord a . showChord b
-  
-instance (ShowChord a, Constructor c) => ShowChord (C c a) where
-  {- INLINE showChord #-}
-  -- showChord c@(C a) = paren $ showString (takeWhile (/= '_') (conName c)) . showChord a
-  showChord c@(C a) = paren $ showString (conName c) . showChord a
-
-instance ShowChord a => ShowChord (Var a) where
-  {- INLINE showChord #-}
-  showChord (Var x) = showChord x
-
-instance ShowChord a => ShowChord (Rec a) where
-  {- INLINE showChord #-}
-  showChord (Rec x) = showChord x
-
-
--- Dispatcher
-{- INLINE showChordDefault #-}
-showChordDefault :: (Representable a, ShowChord (Rep a)) => a -> ShowS
-showChordDefault = showChord . from
-
-
--- Adhoc instances
-instance ShowChord Int      where 
-  {- INLINE showChord #-}
-  showChord = shows
-instance ShowChord Integer  where 
-  {- INLINE showChord #-}
-  showChord = shows
-instance ShowChord Float    where 
-  {- INLINE showChord #-}
-  showChord = shows
-instance ShowChord Double   where 
-  {- INLINE showChord #-}
-  showChord = shows
-instance ShowChord Char     where 
-  {- INLINE showChord #-}
-  showChord = shows
-instance ShowChord Bool     where 
-  {- INLINE showChord #-}
-  showChord = shows
-
-
-instance ShowChord a => ShowChord [a] where
-  {- INLINE showChord #-}
-  showChord = paren . foldr (.) id . map showChord
-  
-instance ShowChord [Char] where
-  {- INLINE showChord #-}
-  showChord = showString
-
-instance (ShowChord a) => ShowChord (Maybe a) where
-  {- INLINE showChord #-}
-  showChord Nothing  = id
-  showChord (Just a) = showChord a
-
--- Utilities
-paren :: ShowS -> ShowS
-paren x = showChar '[' . x . showChar ']'
diff --git a/MIR/HarmGram/Tokenizer.hs b/MIR/HarmGram/Tokenizer.hs
deleted file mode 100644
--- a/MIR/HarmGram/Tokenizer.hs
+++ /dev/null
@@ -1,247 +0,0 @@
-{-# LANGUAGE DeriveDataTypeable       #-}
-{-# LANGUAGE RankNTypes               #-}
-{-# LANGUAGE FlexibleContexts         #-}
-
-module MIR.HarmGram.Tokenizer where
-
--- Parser stuff
-import Text.ParserCombinators.UU
-import Text.ParserCombinators.UU.BasicInstances.String
-
-import Data.Char (digitToInt)
-import Data.List (intersperse)
-import Data.Maybe
-import Data.Typeable
-
-import Control.Arrow (first)
-
-
---------------------------------------------------------------------------------
--- Tokens for parsing chords
---------------------------------------------------------------------------------
-
-data PieceToken = PieceToken { key :: ChordName, labels :: [ChordName] }
-
-data Chord a = Chord a (Maybe Shorthand) [Degree] String Int
-                -- The String stores the original input
-                -- The Int stores the number of repeated chords
-  deriving Eq
-  
-instance (Show a) => Show (Chord a) where
-  show (Chord a sh deg _ _) = show a 
-                             ++ if isJust sh then show (fromJust sh) else ""
-                             ++ if not (null deg) then show deg else ""
-  
-type ChordName = Chord ChordRoot
-
-data Degree = Degree (Maybe Modifier) Interval
-  deriving (Eq, Typeable)
-
-instance Show Degree where
-  show (Degree m interval) = intervalToDegree interval ++ maybe "" show m
-
-intervalToDegree :: Int -> String
-intervalToDegree i = ["I","II", "III","IV","V","VI","VII"] !! ((i-1) `mod` 7)
-  
--- shows Degrees that are used as chord additions (see also showAdditions)   
-showAddition :: Degree -> String  
-showAddition (Degree m interval) = maybe "" show m ++ show interval
-  
-data Modifier = Sh | Fl | SS | FF -- Sharp, flat, double sharp, double flat
-  deriving (Eq)
-  
-instance Show Modifier where 
-  show Sh = "#"
-  show Fl = "b"
-  show SS = "##"
-  show FF = "bb"   
-
-data Shorthand = -- Triad chords
-                 Maj | Min | Dim | Aug
-                 -- Seventh chords
-               | Maj7 | Min7 | Sev | Dim7 | HDim7 | MinMaj7
-                 -- Sixth chords
-               | Maj6 | Min6
-                 -- Extended chords
-               | Nin | Maj9 | Min9
-                 -- Suspended chords
-               | Sus4
-  deriving (Show, Eq)
-
-type Interval = Int -- Ranges from 1 to 13
-
-data ChordRoot = A  | B  | C  | D  | E  | F  | G
-               | Ab | Bb | Cb | Db | Eb | Fb | Gb
-               | As | Bs | Cs | Ds | Es | Fs | Gs
-  deriving (Show, Eq)
-
-pString :: (Provides st a b) => [a] -> P st [b]
-pString s = foldr (\a b -> (:) <$> a <*> b) (pure []) (map pSym s)
-
--- Input is a string of whitespace-separated chords, e.g.
--- Bb:9(s11) E:min7 Eb:min7 Ab:7 D:min7 G:7(13) C:maj6(9)
--- First token is the key of the piece
-parseSong :: Parser PieceToken
-parseSong = PieceToken <$> parseKey <* pSpaces 
-                       <*> pListSep_ng pSpaces parseChord 
-                           <* pList pSpaces
-  where pSpaces = pAnySym [' ','\n','\t']
-
--- For now, I assume there is always a shorthand, and sometimes extra
--- degrees. I guess it might be the case that sometimes there is no shorthand,
--- but then there certainly are degrees.
-parseChord, parseKey :: Parser ChordName
-parseChord = f <$> parseRoot <* pSym ':' <*> pMaybe parseShorthand
-                                         <*> (parseDegrees `opt` [])
-  where -- in case of a sus4 we also analyse the degree list, if there is one.
-        f r (Just Sus4) [] = Chord r (Just Sus4) [] (str r Sus4 []) 1
-        f r (Just Sus4) d  = Chord r (Just $ analyseDegs d) d 
-                                      (str r (analyseDegs d) d) 1
-        -- if we have a short hand we use it to determine the class of the chord
-        f r (Just s)    d  = Chord r (Just s) d (str r s d) 1
-        -- in case of there is no short hand we analyse the degree list
-        f r Nothing     d  = Chord r (Just $ analyseDegs d) d 
-                                      (str r (analyseDegs d) d) 1
-        str r s d          = show r ++ show s ++ showAdditions d
-
-parseKey = f <$> parseRoot <* pSym ':' <*> parseShorthand
-  where f k m | k == C && (m == Maj || m == Min) = Chord k (Just m) [] "" 1
-              | otherwise = error "Tokenizer: key must be C:Maj or C:min"
-
--- analyses a list of Degrees and assigns a shortHand i.e. Chord Class        
-analyseDegs :: [Degree] -> Shorthand        
-analyseDegs d 
-  | (Degree (Just Fl) 5)  `elem` d = Min
-  | (Degree (Just Sh) 5)  `elem` d = Sev
-  | (Degree (Just Fl) 7)  `elem` d = Sev
-  | (Degree (Just Fl) 9)  `elem` d = Sev
-  | (Degree (Just Sh) 9)  `elem` d = Sev
-  | (Degree (Just Sh) 11) `elem` d = Sev
-  | (Degree (Just Fl) 13) `elem` d = Sev
-  | (Degree (Just Fl) 3)  `elem` d = Min
-  | (Degree  Nothing  3)  `elem` d = Maj
-  | otherwise                      = Maj
-   
-       
--- for showing additional additions
-showAdditions :: [Degree] -> String
-showAdditions a 
-  | null a    = ""
-  | otherwise = "(" ++ concat (intersperse ","  (map showAddition a)) ++ ")"
-
-
-parseShorthand :: Parser Shorthand
-parseShorthand =     Maj      <$ pString "maj"
-                 <|> Min      <$ pString "min"
-                 <|> Dim      <$ pString "dim"
-                 <|> Aug      <$ pString "aug"
-                 <|> Maj7     <$ pString "maj7"
-                 <|> Min7     <$ pString "min7"
-                 <|> Sev      <$ pString "7"
-                 <|> Dim7     <$ pString "dim7"
-                 <|> HDim7    <$ pString "hdim" <* opt (pSym '7') '7'
-                 <|> MinMaj7  <$ pString "minmaj7"
-                 <|> Maj6     <$ pString "maj6"
-                 <|> Maj6     <$ pString "6"
-                 <|> Min6     <$ pString "min6"
-                 <|> Nin      <$ pString "9"
-                 <|> Maj9     <$ pString "maj9"
-                 <|> Min9     <$ pString "min9"
-                 <|> Sus4     <$ pString "sus4" <?> "Shorthand"
-
--- We don't produce intervals for a shorthand. This could easily be added,
--- though.
-parseDegrees :: Parser [Degree]
-parseDegrees = pPacked (pSym '(') (pSym ')') 
-                       (catMaybes <$> (pList1Sep (pSym ',') parseDegree))
-                 
-parseDegree :: Parser (Maybe Degree)
-parseDegree =     (Just   <$> (Degree <$> pMaybe parseModifier <*> parseInterval))
-              <|> Nothing <$  pSym '*' <* pMaybe parseModifier <*  parseInterval
-              
-parseModifier :: Parser Modifier
-parseModifier =     Sh <$ pSym    's'
-                <|> Fl <$ pSym    'b'
-                <|> SS <$ pString "ss"
-                <|> FF <$ pString "bb" <?> "Modifier"
-
-parseInterval :: Parser Interval
-parseInterval = pInt
-
-pInt :: Parser Int
-pInt = fmap (foldl (\b a -> b * 10 + digitToInt a) 0) 
-            (pList (pAnySym ['0'..'9']))
-
-parseRoot :: Parser ChordRoot
-parseRoot =     A  <$ pSym 'A'
-            <|> B  <$ pSym 'B'
-            <|> C  <$ pSym 'C'
-            <|> D  <$ pSym 'D'
-            <|> E  <$ pSym 'E'
-            <|> F  <$ pSym 'F'
-            <|> G  <$ pSym 'G'
-            <|> Ab <$ pString "Ab"
-            <|> Bb <$ pString "Bb"
-            <|> Cb <$ pString "Cb"
-            <|> Db <$ pString "Db"
-            <|> Eb <$ pString "Eb"
-            <|> Fb <$ pString "Fb"
-            <|> Gb <$ pString "Gb"
-            <|> As <$ pString "A#"
-            <|> Bs <$ pString "B#"
-            <|> Cs <$ pString "C#"
-            <|> Ds <$ pString "D#"
-            <|> Es <$ pString "E#"
-            <|> Fs <$ pString "F#"
-            <|> Gs <$ pString "G#" <?> "Chord root"
-
--- Testing the tokenizer
-testTokenizer :: String -> IO ()
-testTokenizer s = readFile s >>= print' . map (first labels) . aux where
-  aux = parse (amb ((,) <$> parseSong <*> pEnd)) . createStr
-  print' l@(h:_:_) =
-       putStrLn (show (length l) ++ " possible trees, showing the first:")
-    >> print' [h]
-  print' [(l,e)]   = mapM_ print l >> show_errors e
-  print' []        = print "No parse trees!"
-
---------------------------------------------------------------------------------
--- From chord names to chord degrees
---------------------------------------------------------------------------------
-type ChordDegree = Chord Degree
-
--- relativizeC chord converts a chord to a degree, on scale C
--- (Obviously, this should be generalized to any scale degree, but for now
--- this will do.)
-relativizeC :: ChordName -> ChordDegree
-relativizeC (Chord n s i r m) = Chord (rel n) s i r m where
-  rel :: ChordRoot -> Degree
-  rel C = Degree Nothing 1
-  rel D = Degree Nothing 2
-  rel E = Degree Nothing 3
-  rel F = Degree Nothing 4
-  rel G = Degree Nothing 5
-  rel A = Degree Nothing 6
-  rel B = Degree Nothing 7
-  rel Cs = Degree (Just Sh) 1
-  rel Ds = Degree (Just Sh) 2
-  rel Es = Degree (Just Sh) 3
-  rel Fs = Degree (Just Sh) 4
-  rel Gs = Degree (Just Sh) 5
-  rel As = Degree (Just Sh) 6
-  rel Bs = Degree (Just Sh) 7
-  rel Cb = Degree (Just Fl) 1
-  rel Db = Degree (Just Fl) 2
-  rel Eb = Degree (Just Fl) 3
-  rel Fb = Degree (Just Fl) 4
-  rel Gb = Degree (Just Fl) 5
-  rel Ab = Degree (Just Fl) 6
-  rel Bb = Degree (Just Fl) 7
-
--- Merges duplicate chords
-mergeDups :: (Eq a) => [Chord a] -> [Chord a]
-mergeDups []  = []
-mergeDups [x] = [x]
-mergeDups (c1@(Chord n s i r m):c2@(Chord n2 s2 i2 r2 _):t)
-  | n == n2 && s == s2 = mergeDups ((Chord n s (i++i2) (r ++" "++ r2) (m+1)):t)
-  | otherwise          = c1 : mergeDups (c2:t)
diff --git a/MIR/HarmGram/TypeLevel.hs b/MIR/HarmGram/TypeLevel.hs
deleted file mode 100644
--- a/MIR/HarmGram/TypeLevel.hs
+++ /dev/null
@@ -1,38 +0,0 @@
-{-# LANGUAGE EmptyDataDecls           #-}
-{-# LANGUAGE KindSignatures           #-}
-{-# LANGUAGE TypeFamilies             #-}
-{-# LANGUAGE UndecidableInstances     #-}
-{-# LANGUAGE ScopedTypeVariables      #-}
-{-# LANGUAGE DeriveDataTypeable       #-}
-
-module MIR.HarmGram.TypeLevel (
-      Su, Ze 
-    , T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10
-    , ToNat(..)
-  ) where
-
-import Data.Typeable
-
-
--- Type level peano naturals
-data Su :: * -> *  deriving Typeable
-data Ze :: *       deriving Typeable
-
--- Some shorthands
-type T0 = Ze
-type T1 = Su T0
-type T2 = Su T1
-type T3 = Su T2
-type T4 = Su T3
-type T5 = Su T4
-type T6 = Su T5
-type T7 = Su T6
-type T8 = Su T7
-type T9 = Su T8
-type T10 = Su T9
-
-class ToNat n where
-  toNat :: n -> Int
-
-instance ToNat Ze where toNat _ = 0
-instance (ToNat n) => ToNat (Su n) where toNat _ = 1 + toNat (undefined :: n)
diff --git a/MIR/Instances.hs b/MIR/Instances.hs
deleted file mode 100644
--- a/MIR/Instances.hs
+++ /dev/null
@@ -1,532 +0,0 @@
-{-# OPTIONS_GHC -fno-warn-orphans   #-}
-{-# LANGUAGE TemplateHaskell        #-}
-{-# LANGUAGE TypeOperators          #-}
-{-# LANGUAGE EmptyDataDecls         #-}
-{-# LANGUAGE TypeSynonymInstances   #-}
-{-# LANGUAGE ScopedTypeVariables    #-}
-{-# LANGUAGE FlexibleInstances      #-}
-{-# LANGUAGE FlexibleContexts       #-}
-{-# LANGUAGE TypeFamilies           #-}
-{-# LANGUAGE MultiParamTypeClasses  #-}
-{-# LANGUAGE UndecidableInstances   #-}
-{-# LANGUAGE OverlappingInstances   #-}
--- {-# LANGUAGE IncoherentInstances    #-} -- for ghc-6.12
-{-# LANGUAGE GADTs                  #-}
-
-module MIR.Instances where
-
--- Generics stuff
-import Generics.Instant.TH
-
--- Parser stuff
-import Text.ParserCombinators.UU
-import Text.ParserCombinators.UU.BasicInstances.List ()
-
--- Diff
-import MIR.Matching.GDiff
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
-import MIR.HarmGram.MIR
-import MIR.HarmGram.Tokenizer
-import MIR.HarmGram.TypeLevel
-
--- Library modules
-import Control.Monad (join)
-import Data.List  (intersperse)
-import Data.Array
-import Control.Arrow
-import Data.Typeable 
-
-
---------------------------------------------------------------------------------
--- The non-generic part of the parser
---------------------------------------------------------------------------------
-
--- Ad-hoc cases for Base_SD
-instance ParseG (Base_SD   deg clss Ze) where parseG = empty
-instance ParseG (Base_Vmin deg clss Ze) where parseG = empty
-
-
-instance ( ParseG (Base_SD (VDom deg) DomClass n)
-         , ParseG (Min5 deg clss n)
-         ) => ParseG (Base_SD deg clss (Su n)) where
-  parseG =     Base_SD      <$> parseG
-           <|> Cons_Vdom <$> parseG <*> parseG
-  
--- Ad-hoc cases for Base_Vmin
-instance ( ParseG (Base_SD (VMin deg) MinClass n)
-         , ParseG (TritMinVSub    deg        DomClass)
-         ) => ParseG (Base_Vmin deg DomClass (Su n)) where
-  parseG =     Base_Vmin <$> parseG
-           <|> Cons_Vmin      <$> parseG <*> parseG
-
-instance ( ParseG (TritMinVSub deg         clss)
-         ) => ParseG (Base_Vmin deg clss (Su n)) where
-  parseG =     Base_Vmin <$> parseG
-
-
--- Ad-hoc cases for Base_Final
-instance ParseG (Base_Final deg clss Ze) where parseG = empty
-
-instance ( ParseG (Final deg clss)
-         ) => ParseG (Base_Final deg clss (Su n)) where
-  parseG =     Base_Final  <$> parseG
-  
-instance ( ToDegree deg
-         , ParseG (Final   deg           DomClass)
-         , ParseG (Base_Final (Tritone deg) DomClass n)
-         , ParseG (Base_Final (Tritone deg) DimClass n)
-         ) => ParseG (Base_Final deg DomClass (Su n)) where
-  parseG =     Base_Final     <$> parseG
-           <|> Final_Tritone  <$> parseG
-           <|> Final_Dim_Trit <$> parseG
-    where deg = toDegree (undefined :: deg)  
--- for dim chors    
-instance ParseG (Surface_Chord deg clss Ze) where parseG = empty
-
-instance ( ToDegree deg 
-         , ParseG (Surface_Chord (MinThird deg) DimClass n)
-         ) => ParseG (Surface_Chord deg DimClass (Su n)) where
-  parseG =     Dim_Chord_Trns <$> parseG
-           <|> pChord deg DimClass
-    where deg = toDegree (undefined :: deg)  
-  
--- all chords
-instance ( ToDegree deg, ToClass clss
-         ) => ParseG (Surface_Chord deg clss (Su n)) where
-  parseG = pChord deg clss
-    where deg = toDegree (undefined :: deg)
-          clss = toClass (undefined :: clss)
-
-pChord :: Degree -> ClassType -> PMusic (Surface_Chord deg clss (Su n))
-pChord deg clss = transform <$> 
-                    pSym (recognize, "ChordDegree", 
-                          Chord deg (Just (head classes)) [] "inserted" 1) where
-  recognize (Chord deg' (Just shrt) _ _ _) = deg == deg' && shrt `elem` classes
-  recognize (Chord deg' Nothing     _ _ _) = False -- deg == deg'
-                                             -- It seems that we can't use 
-                                             -- deg == deg' above, as we get
-                                             -- "ambiguous parser?" for some
-                                             -- sequences, e.g.
-                                             -- C:6 Bb:9 A:7 D:9 G:maj C: G:7 C:6
-  classes = case clss of
-              MajClass -> [Maj,Maj7,Maj6,Maj9,MinMaj7,Sus4]
-              MinClass -> [Min,Min7,Min6,Min9,HDim7]
-              DomClass -> [Sev,Nin,Aug]
-              DimClass -> [Dim,Dim7]
-  transform (Chord d s _ o n) = 
-    Surface_Chord d [(Class clss (maybe (head classes) id s),t) | t <- words o ]
-
---------------------------------------------------------------------------------
--- The non-generic part of the pretty-printer
---------------------------------------------------------------------------------
-
--- Ad-hoc cases for Base_SD
-instance ShowChord (Base_SD deg clss Ze) where
-  showChord _ = error "showChord: impossible?"
-  
-instance ( ShowChord (Min5    deg               clss     n)
-         , ShowChord (Base_SD (VDom deg)        DomClass n)
-         , ToDegree  (Tritone deg) -- can this go?
-         ) => ShowChord (Base_SD deg clss (Su n)) where
-  showChord (Base_SD s)        = showChord s
-  showChord (Cons_Vdom s d) = relVPrint "V" s d 0
-  
-
--- Ad-hoc cases for Base_Vmin  
-instance ShowChord (Base_Vmin deg clss Ze) where
-  showChord _ = error "showChord: impossible?"
-
-instance ( ShowChord (Base_SD (VMin deg)  MinClass n)
-         , ShowChord (TritMinVSub deg        DomClass)
-         ) => ShowChord (Base_Vmin deg clss (Su n)) where
-  showChord (Base_Vmin d) = showChord d
-  -- pattern match into the SD to see if we are our target degree
-  -- is tritone substituted, if so, we "tritone-unsubstitute"
-  showChord (Cons_Vmin    s d@(Final_Tritone  _)) = relVPrint "v" s d 1
-  showChord (Cons_Vmin    s d@(Final_Dim_Trit _)) = relVPrint "v" s d 1
-  showChord (Cons_Vmin    s d                   ) = relVPrint "v" s d 0
-  
--- Ad-hoc cases for Base_Final
-instance ShowChord (Base_Final deg clss Ze) where
-  showChord _ = error "showChord: impossible?"
-
-instance ( GetDegree (Base_Final (Tritone deg) DomClass n)
-         , GetDegree (Base_Final (Tritone deg) DimClass n)
-         , ShowChord (Final deg clss)
-         , ShowChord (Base_Final (Tritone deg)  DomClass n)
-         , ShowChord (Base_Final (Tritone deg)  DimClass n)
-         ) => ShowChord (Base_Final deg clss (Su n)) where
-  showChord (Base_Final d)  = showChord d
-  -- The tritone substitution of a relative V is as alsway one semitone above
-  -- the chord it is preceding
-  showChord (Final_Tritone  d)  = transPrint "IIb7/"   d 11 
-  showChord (Final_Dim_Trit d)  = transPrint "IIb7b9/" d 11 
-
--- dim base case
-instance ShowChord (Surface_Chord deg clss Ze) where
-  showChord _ = error "showChord: impossible?"
-
-instance ( ShowChord (Surface_Chord deg clss n) 
-         , ShowChord (Surface_Chord (MinThird deg) DimClass n) 
-         , GetDegree (Surface_Chord (MinThird deg) DimClass n)
-         ) => ShowChord (Surface_Chord deg clss (Su n)) where
-  showChord (Surface_Chord d rs) = foldr (.) id
-     [ paren (shows d . shows r . paren (showString s)) | (r,s) <- rs ]       
-  showChord (Dim_Chord_Trns d) = paren $ toDegVal d 9 . showChar '0' . showChord d
-  
---------------------------------------------------------------------------------
--- Value level computation for pretty printing
---------------------------------------------------------------------------------   
-
--- prints a secondary dominance structure, i.e. X/Y where X and Y are scaledegrees
-relVPrint :: (GetDegree a, ShowChord b, ShowChord a) =>
-             String -> b -> a -> Int -> ShowS
-relVPrint prfx s d trans =
-  paren (showString prfx . showChar '/' . toDegVal d trans . showChord  s)
-  . showChord d 
---  paren (toDegVal d 7 
---  . paren (showString prfx . showChar '/' . toDegVal d trans . showChord  s))
---  . showChord d  
-
--- prints a single scale degree transformation  
-transPrint :: (GetDegree a, ShowChord a) =>
-              String -> a -> Int -> ShowS
-transPrint prfx d trans =
-  paren $ showString prfx. toDegVal d trans . showChord d
-  
-  
--- This function retuns a value level description of a degree using getDegree. 
--- Certain visualizations demand an addiional scale degree tranposition. The 
--- addTrans integer value can be used for that (use 0 for no transposition)
-toDegVal :: (GetDegree a) => a -> Int -> ShowS  
-toDegVal deg addTrans = case getDeg deg of 
-  (deg, trans) -> shows $ transposeSem deg (trans + addTrans) 
-
-
--- Given a degree getDegee ensures that all information about the internal
--- structure of a scale degree, i.e. the degree and the an int value representing
--- the transposition of that degree at the current level, is available.
-class GetDegree a where
-  getDeg :: a -> (Degree, Int) 
-  
-instance GetDegree (Base_Vmin deg clss n) where
-  getDeg (Base_Vmin d) = getDeg d
-  getDeg (Cons_Vmin _ d)    = second (+5) (getDeg d)
-
-instance ( GetDegree (Base_Final deg clss Ze)) where 
-  getDeg = error "getDegree: impossible?"
-instance ( GetDegree (Final deg clss)
-         , GetDegree (Base_Final (Tritone deg)  DomClass n)
-         , GetDegree (Base_Final (Tritone deg)  DimClass n)
-         ) => GetDegree (Base_Final deg clss (Su n)) where
-  getDeg (Base_Final d)  = getDeg d
-  -- The tritone substitution of a relative V is as alsway one semitone above
-  -- the chord it is preceding
-  getDeg (Final_Tritone  d)  = second (+6) (getDeg d)
-  getDeg (Final_Dim_Trit d)  = second (+6) (getDeg d)
-  
-instance ( GetDegree (Surface_Chord deg clss Ze)) where 
-  getDeg = error "getDegree: impossible?"
-  
-instance ( GetDegree (Surface_Chord deg clss n)
-         , GetDegree (Surface_Chord (MinThird deg) DimClass n)
-         ) => GetDegree (Surface_Chord deg clss (Su n)) where
-  getDeg (Surface_Chord d _) = (d,0) 
-  getDeg (Dim_Chord_Trns d  ) = second (+9) (getDeg d)
-
---------------------------------------------------------------------------------
--- Value Level Scale Degree Transposition
--------------------------------------------------------------------------------- 
-
--- transposes a degree with sem semitones
-transposeSem :: Degree -> Int -> Degree
-transposeSem deg sem = semiToDia!((sem + (diaToSemi deg)) `mod` 12)
-
--- gives the semitone value [0,11] of a Degree, e.g. F# = 6
-diaToSemi :: Degree -> Int
-diaToSemi (Degree m dia) = (diaToSemi'!dia) + (modToSemi m)
-
--- transforms type-level modifiers to semitones (Int values)
-modToSemi :: Maybe Modifier -> Int
-modToSemi  Nothing  =  0
-modToSemi (Just Sh) =  1
-modToSemi (Just Fl) = -1
-modToSemi (Just SS) =  2
-modToSemi (Just FF) = -2
-
--- mapping diatonic intervals to semitones 
-diaToSemi' :: Array Interval Int
-diaToSemi' = listArray (1,7) [0,2,4,5,7,9,11]
-
--- mapping semitones to diatonic Degrees
--- TODO: what about pitch spelling...?
-semiToDia  :: Array Int Degree
-semiToDia  = listArray (0,11)
-  [ Degree  Nothing  1 -- 0 C
-  , Degree (Just Fl) 2 -- 1 Db
-  , Degree  Nothing  2 -- 2 D
-  , Degree (Just Fl) 3 -- 3 Eb
-  , Degree  Nothing  3 -- 4 E
-  , Degree  Nothing  4 -- 5 F
-  , Degree (Just Sh) 4 -- 6 F#
-  , Degree  Nothing  5 -- 7 G
-  , Degree (Just Fl) 6 -- 8 Ab
-  , Degree  Nothing  6 -- 9 A
-  , Degree (Just Fl) 7 -- 10 Bb
-  , Degree  Nothing  7 -- 11 B
-  ]
-  
-
---------------------------------------------------------------------------------
--- The non-generic part of the diff
---------------------------------------------------------------------------------
-
-instance Children (Base_SD deg clss Ze) where children _ = []
-
-instance ( GDiff (Base_SD (VDom deg) DomClass n)
-         , GDiff (Min5 deg clss n)
-         ) => Children (Base_SD deg clss (Su n)) where
-  children (Base_SD x) = [Ex x]
-  children (Cons_Vdom x y) = [Ex x, Ex y]
-
-
-instance Children (Base_Vmin deg clss Ze) where children _ = []
-
-instance ({- -- for ghc-6.12 
-           Typeable (MinThird (MinThird (MinThird (MinThird (Tritone deg))))),
-           Typeable (MinThird (MinThird (MinThird (Tritone deg)))),
-           Typeable (MinThird (MinThird (Tritone deg))),
-           Typeable (MinThird (Tritone deg)),
-           Typeable (Tritone (Tritone deg)),
-           Typeable (Tritone deg),
-           Typeable deg,
-         -}
-           GDiff (Base_SD (VMin deg)  MinClass n)
-         , GDiff (TritMinVSub deg DomClass)
-         ) => Children (Base_Vmin deg DomClass (Su n)) where
-  children (Base_Vmin x) = [Ex x]
-  children (Cons_Vmin x y) = [Ex x, Ex y]
-
-instance ( Typeable deg, Typeable clss, GDiff (TritMinVSub deg clss)
-         ) => Children (Base_Vmin deg clss (Su n)) where
-  children (Base_Vmin x) = [Ex x]
-
-
-instance Children (Base_Final deg clss Ze) where children _ = []
-
-instance ( GDiff (Base_Final (Tritone deg) DomClass n)
-         , GDiff (Base_Final (Tritone deg) DimClass n)
-         , GDiff (Final      deg           DomClass), Typeable deg
-         ) => Children (Base_Final deg DomClass (Su n)) where
-  children (Base_Final x) = [Ex x]
-  children (Final_Tritone x) = [Ex x]
-  children (Final_Dim_Trit x) = [Ex x]
-
-instance (Typeable deg, Typeable clss, GDiff (Final deg clss)) 
-    => Children (Base_Final deg clss (Su n)) where
-  children (Base_Final x) = [Ex x]
-
-instance Children (Surface_Chord deg clss Ze) where children _ = []
-
-instance Children (Surface_Chord deg clss (Su n)) where
-  children (Surface_Chord d ((c,_):_)) = [Ex d, Ex c]
-
-instance (GDiff (Surface_Chord (MinThird deg) DimClass n))
-    => Children (Surface_Chord deg DimClass (Su n)) where
-  children (Surface_Chord d ((c,_):_)) = [Ex d, Ex c]
-  children (Dim_Chord_Trns x) = [Ex x]
-
---------------------------------------------------------------------------------
-
-instance Build (Base_SD deg clss Ze) where build _ _ = Nothing
-
-instance ( Typeable n, Typeable (VDom deg), Typeable deg, Typeable clss
-         , GDiff (Base_SD (VDom deg) DomClass n)
-         , GDiff (Min5 deg clss n)
-         ) => Build (Base_SD deg clss (Su n)) where
-  build (Base_SD _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Base_SD
-  build (Cons_Vdom _ _) ((Ex x):(Ex y):r) = do x' <- cast x
-                                               y' <- cast y
-                                               Just (Cons_Vdom x' y', r)
-  build _ _ = Nothing
-
-
-instance Build (Base_Vmin deg clss Ze) where build _ _ = Nothing
-
-instance ( Typeable n, Typeable (VMin deg), Typeable deg
-         , GDiff (Base_SD (VMin deg) MinClass n)
-         , GDiff (TritMinVSub    deg        DomClass)
-         ) => Build (Base_Vmin deg DomClass (Su n)) where
-  build (Base_Vmin _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Base_Vmin
-  build (Cons_Vmin _ _) ((Ex x):(Ex y):r) = do x' <- cast x
-                                               y' <- cast y
-                                               Just (Cons_Vmin x' y', r)
-
-instance ( Typeable deg, Typeable clss, GDiff (TritMinVSub deg clss)
-         ) => Build (Base_Vmin deg clss (Su n)) where
-  build (Base_Vmin _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Base_Vmin
-
-
-instance Build (Base_Final deg clss Ze) where build _ _ = Nothing
-
-instance ( Typeable n, Typeable (Tritone deg), Typeable deg
-         , GDiff (Base_Final (Tritone deg) DomClass n)
-         , GDiff (Base_Final (Tritone deg) DimClass n)
-         , GDiff (Final      deg           DomClass)
-         ) => Build (Base_Final deg DomClass (Su n)) where
-  build (Base_Final _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Base_Final
-  build (Final_Tritone _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Final_Tritone
-  build (Final_Dim_Trit _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Final_Dim_Trit
-
-instance (Typeable deg, Typeable clss) 
-    => Build (Base_Final deg clss (Su n)) where
-  build (Base_Final _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Base_Final
-
-
-instance Build (Surface_Chord den clss Ze) where build _ _ = Nothing
-
-instance Build (Surface_Chord den clss (Su n)) where
-  build (Surface_Chord _ ((_,s):r)) ((Ex x):(Ex y):rs) = 
-    do x' <- cast x
-       y' <- cast y
-       Just (Surface_Chord x' ((y',s):r),rs)
-
-instance (Typeable (MinThird den), Typeable n)
-    => Build (Surface_Chord den DimClass (Su n)) where
-  build (Dim_Chord_Trns _) ((Ex x):r) = cast x >>= Just . (flip (,) r) . Dim_Chord_Trns
-  build (Surface_Chord _ ((_,s):r)) ((Ex x):(Ex y):rs) = 
-    do x' <- cast x
-       y' <- cast y
-       Just (Surface_Chord x' ((y',s):r),rs)
-
---------------------------------------------------------------------------------
-
-instance SEq (Base_SD deg clss Ze) where shallowEq _ _ = False -- ?
-
-instance ( GDiff (Base_SD (VDom deg) DomClass n)
-         , GDiff (Min5 deg clss n)
-         ) => SEq (Base_SD deg clss (Su n)) where
-  shallowEq (Base_SD _) (Base_SD _) = True
-  shallowEq (Cons_Vdom _ _) (Cons_Vdom _ _) = True
-  shallowEq _ _ = False
-
-
-instance SEq (Base_Vmin deg clss Ze) where shallowEq _ _ = False
-
-instance ( GDiff (Base_SD     (VMin deg) MinClass n)
-         , GDiff (TritMinVSub deg        DomClass)
-         ) => SEq (Base_Vmin deg DomClass (Su n)) where
-  shallowEq (Base_Vmin _) (Base_Vmin _) = True
-  shallowEq (Cons_Vmin _ _) (Cons_Vmin _ _) = True
-  shallowEq _ _ = False
-
-instance ( GDiff (TritMinVSub deg         clss)
-         ) => SEq (Base_Vmin deg clss (Su n)) where
-  shallowEq (Base_Vmin _) (Base_Vmin _) = True
-  shallowEq _ _ = False
-
-
-instance SEq (Base_Final deg clss Ze) where shallowEq _ _ = False
-
-instance ( GDiff (Base_Final (Tritone deg) DomClass n)
-         , GDiff (Base_Final (Tritone deg) DimClass n)
-         , GDiff (Final      deg           DomClass)
-         ) => SEq (Base_Final deg DomClass (Su n)) where
-  shallowEq (Base_Final _) (Base_Final _) = True
-  shallowEq (Final_Tritone _) (Final_Tritone _) = True
-  shallowEq (Final_Dim_Trit _) (Final_Dim_Trit _) = True
-  shallowEq _ _ = False
-
-instance (SEq (Final deg clss)) => SEq (Base_Final deg clss (Su n)) where
-  shallowEq (Base_Final _) (Base_Final _) = True
-  shallowEq _ _ = False
-
-
-instance SEq (Surface_Chord deg clss Ze) where shallowEq _ _ = False
-
-instance SEq (Surface_Chord deg clss (Su n)) where
-  shallowEq (Surface_Chord _ _) (Surface_Chord _ _) = True
-  shallowEq _ _ = False
-
-instance SEq (Surface_Chord deg DimClass (Su n)) where
-  shallowEq (Dim_Chord_Trns _) (Dim_Chord_Trns _) = True
-  shallowEq (Surface_Chord _ _) (Surface_Chord _ _) = True
-  shallowEq _ _ = False
-
-
---------------------------------------------------------------------------------
-
-instance (Typeable deg, Typeable clss) => 
-  GDiff (Base_SD deg clss Ze)
-
-instance ( Typeable deg, Typeable clss, Typeable n, Typeable (VDom deg)
-         , GDiff (Base_SD (VDom deg) DomClass n)
-         , GDiff (Min5 deg clss n)
-         ) => GDiff (Base_SD deg clss (Su n))
-
-
-instance (Typeable deg, Typeable clss)
-  => GDiff (Base_Vmin deg clss Ze)
-
-instance ({- -- for ghc-6.12
-           Typeable (MinThird (MinThird (MinThird (MinThird (Tritone deg))))),
-           Typeable (MinThird (MinThird (MinThird (Tritone deg)))),
-           Typeable (MinThird (MinThird (Tritone deg))),
-           Typeable (MinThird (Tritone deg)),
-           Typeable (Tritone (Tritone deg)),
-           Typeable (Tritone deg),
-          -}
-           Typeable (VMin deg), Typeable deg, Typeable n
-         , GDiff (Base_SD (VMin deg) MinClass n)
-         , GDiff (TritMinVSub    deg        DomClass)
-         ) => GDiff (Base_Vmin deg DomClass (Su n))
-
-instance ( Typeable deg, Typeable clss, Typeable n
-         , GDiff (TritMinVSub deg         clss)
-         ) => GDiff (Base_Vmin deg clss (Su n))
-
-
-instance (Typeable deg, Typeable clss)
-  => GDiff (Base_Final deg clss Ze)
-
-instance ( Typeable deg, Typeable n, Typeable (Tritone deg)
-         , GDiff (Base_Final (Tritone deg) DomClass n)
-         , GDiff (Base_Final (Tritone deg) DimClass n)
-         , GDiff (Final      deg           DomClass)
-         ) => GDiff (Base_Final deg DomClass (Su n))
-
-instance (Typeable deg, Typeable clss, Typeable n, GDiff (Final deg clss)) 
-  => GDiff (Base_Final deg clss (Su n))
-
-
-instance (Typeable deg, Typeable clss)
-  => GDiff (Surface_Chord deg clss Ze)
-
-instance (Typeable deg, Typeable clss, Typeable n)
-  => GDiff (Surface_Chord deg clss (Su n))
-
-instance ( Typeable deg, Typeable n, Typeable (MinThird deg)
-         , GDiff (Surface_Chord (MinThird deg) DimClass n)
-         )
-  => GDiff (Surface_Chord deg DimClass (Su n))
---------------------------------------------------------------------------------
-
-instance Children Class where children _ = []
-instance Build Class where build c r = Just (c,r)
-instance SEq Class where shallowEq _ _ = True
-instance GDiff Class
-
-instance Children Degree where children _ = []
-instance Build Degree where build c r = Just (c,r)
-instance SEq Degree where shallowEq _ _ = True
-instance GDiff Degree
-
---------------------------------------------------------------------------------
--- ChordDegree as tokens
---------------------------------------------------------------------------------
-
-instance IsLocationUpdatedBy (Int, Int) ChordDegree where
-  advance (line,pos) _ = (line,pos+1)
diff --git a/MIR/Matching/GDiff.hs b/MIR/Matching/GDiff.hs
deleted file mode 100644
--- a/MIR/Matching/GDiff.hs
+++ /dev/null
@@ -1,4 +0,0 @@
-
-module MIR.Matching.GDiff (module Generics.Instant.GDiff) where
-
-import Generics.Instant.GDiff
diff --git a/MIR/Matching/Standard.hs b/MIR/Matching/Standard.hs
deleted file mode 100644
--- a/MIR/Matching/Standard.hs
+++ /dev/null
@@ -1,15 +0,0 @@
-
-module MIR.Matching.Standard where
-
-import Data.Algorithm.Diff -- cabal install Diff
-
-diff :: (Eq a) => [a] -> [a] -> [(DI,a)]
-diff = getDiff
-
-diffLen :: (Eq a) => [a] -> [a] -> Float
-diffLen x y = fromIntegral (len (diff x y)) / fromIntegral (length x)
-
-len :: [(DI,a)] -> Int
-len []        = 0
-len ((B,_):t) = len t
-len ((_,_):t) = 1 + len t
diff --git a/MIR/Run.hs b/MIR/Run.hs
deleted file mode 100644
--- a/MIR/Run.hs
+++ /dev/null
@@ -1,249 +0,0 @@
-{-# OPTIONS_GHC -Wall -fno-warn-orphans #-}
-{-# LANGUAGE ScopedTypeVariables #-}
-
--- Testing
-module MIR.Run 
-  ( readFile', parseTree, testDir,  string2PieceC
-  , diffPiece, diffChords, diffChordsLen, diffPieceLen, showFloat
-  , getId, getTitle, getDb, readDataDir, writeGroundTruth
-  , createGroundTruth, getClassSizes, showErrors, errorRatio
-  ) where
-
--- Parser stuff
-import Text.ParserCombinators.UU
-import Text.ParserCombinators.UU.BasicInstances hiding (head)
-import Text.ParserCombinators.UU.BasicInstances.List
-
--- Music stuff
-import MIR.HarmGram.ParserChord
-import MIR.HarmGram.ShowChord
---import EnumChord
-import MIR.HarmGram.MIR
-import MIR.HarmGram.Tokenizer
-import qualified MIR.Matching.GDiff as GD
-import qualified MIR.Matching.Standard as STDiff
-import MIR.GeneratedInstances.GeneratedInstances ()
---import MIR.Instances ()
-import Text.Regex.TDFA
-
--- Library modules
-import System.Console.ParseArgs hiding (args) -- cabal install parseargs
-import Control.Monad (when)
-import Data.List (intersperse, sort, groupBy, genericLength)
-import Control.Arrow ((***))
-import System.FilePath
-import System.Directory
-import System.IO
-import System.CPUTime
--- import qualified Data.HashTable as HT
-
-
---------------------------------------------------------------------------------
--- From tokens to structured music pieces
---------------------------------------------------------------------------------
-
--- Piece needs to be adhoc so that we do not use 'amb'
-{-
-instance ParseG Piece where
-  parseG = Piece <$> parseG <|> Piece_min <$> parseG <|> Piece_bls <$> parseG
-
-instance ShowChord Piece where
-  showChord (Piece     l) = paren (showString "P"    . showChord l)
-  showChord (Piece_min l) = paren (showString "PMin" . showChord l)
-  showChord (Piece_bls l) = paren (showString "PBls" . showChord l)
--}
-
-
--- parsePiece :: PMusic [Piece]
-{-
-parsePiece = fmap (:[]) $     Piece     <$> parseG 
-                          <|> Piece_min <$> parseG
-                          <|> Piece_bls <$> parseG
--}
--- parsePiece = amb (parseG :: PMusic Piece)
--- parsePiece = fmap ((:[]) . head) $ amb (parseG :: PMusic Piece)
-
-pMajOrMin :: ChordName -> PMusic [Piece]
-pMajOrMin (Chord C (Just Maj) _ _ _) = map Piece     <$> amb parseG
-pMajOrMin (Chord C (Just Min) _ _ _) = map Piece_min <$> amb parseG
-pMajOrMin _                          = error "Parser: key must be C:Maj or C:min"
-
---------------------------------------------------------------------------------
--- Plugging everything together
---------------------------------------------------------------------------------
-
-instance Show Piece where show x = showChord x ""
-
--- Takes a string with line-separated chords of a song in C and
--- returns all possible parsed pieces, together with error-correction steps
--- taken (on tokenizing and on musical recognition).
-string2PieceC :: String -> ([ChordName],[Piece],[Error (Int, Int)],[Error (Int, Int)])
-string2PieceC s = let (PieceToken k a,err) = parse ((,) <$> parseSong <*> pEnd)
-                                      (createStr s (0,0))
-                      b = mergeDups (map relativizeC a)
-                      (c,err2) = parse_h ((,) <$> pMajOrMin k <*> pEnd) 
-                                      (createStr b (0,0))
-                  in (a, c, err, err2)
-
---------------------------------------------------------------------------------
--- Matching
---------------------------------------------------------------------------------
-
-diffPiece :: Piece -> Piece -> String
-diffPiece x y = show (GD.diff x y)
-
-diffPieceLen :: Maybe Float -> Float -> Float -> Piece -> Piece -> Float
-diffPieceLen Nothing   _  _  x y = GD.diffLen x y
-diffPieceLen (Just et) ex ey x y = GD.diffLen x y
-                                 -- Error penalty
-                                 + if (GD.diffLen x y > 0)
-                                   then et * (ex + ey) else 0
-
-diffChordsLen :: Maybe Float -> Float -> Float -> [ChordName] -> [ChordName]
-              -> Float
-diffChordsLen _ _ _ = STDiff.diffLen
-
-diffChords :: [ChordName] -> [ChordName] -> String
-diffChords x y = show (STDiff.diff x y)
-
-
---------------------------------------------------------------------------------
--- Data set Info
---------------------------------------------------------------------------------
-biabPat :: String
-biabPat = "^(.*)_id_([0-9]{5})_(allanah|wdick|community|midicons|realbook).(M|S|m|s)(G|g)[0-9A-Za-z]{1}.txt$"     
-    
-getInfo :: String -> Maybe [String]     
-getInfo fileName = 
-  do let 
-     (_,_,_,groups) <- fileName =~~ biabPat :: Maybe (String,String,String,[String])
-     return groups
-
-getTitle, getId, getDb :: String -> String
-getTitle fn = getInfo' 0 fn     
-getId fn    = getInfo' 1 fn
-getDb fn    = getInfo' 2 fn
-    
-getInfo' :: Int -> String -> String    
-getInfo' i fn = maybe "no_info" (!!i) (getInfo fn)
-                    
-createGroundTruth :: [String] -> [(String, String)]
-createGroundTruth files = [ (getTitle x, getId x) | x <- files ]
-
-getClassSizes :: [String] -> [(String,[String])]
-getClassSizes = map ((head *** id) . unzip) . groupBy gf . createGroundTruth
-  where gf (name1, _key1) (name2, _key2) = name1 == name2
-
-writeGroundTruth :: [FilePath] -> FilePath -> IO ()
-writeGroundTruth files outfp =
-  writeFile outfp . Prelude.tail $ concatMap merge (createGroundTruth files) 
-     where merge :: (String, String) -> String
-           -- merge = uncurry (++) . second ((:) '\t') . first ((:) '\n')
-           merge (x,y) = '\n' : y ++ "\t" ++ x
-  
-    
-
---------------------------------------------------------------------------------
--- Testing
--------------------------------------------------------------------------------- 
-
--- parses a string of chords s and returns a parse tree with the harmony structure
-parseTree :: String -> IO ()
-parseTree s = do let (toks, ps, err1, err2) = string2PieceC s -- we hardcode C for now
-                 putStrLn "\nTokenizer output:"
-                 mapM_ print toks
-                 putStrLn "\nCorrection steps (tokenizer):"
-                 show_errors err1
-                 putStrLn "\nCorrection steps (music recognizer):"
-                 show_errors err2
-                 putStrLn (show (length ps) ++ " possible outputs:")
-                 mapM_ print (take 10 ps)
-
--- Batch analyzing a directory with chord sequence files with reduced output.
-testDir :: FilePath -> IO ()
-testDir filepath = getDirectoryContents filepath >>= process filepath . sort
-
-process :: String -> [String] -> IO ()
-process fp fs = do putStr "Filename\tNumber of trees\t"
-                   putStr "Insertions\tDeletions\tDeletions at the end\t"
-                   putStr "Tot_Correction\tNr_of_chords\t"
-                   putStrLn "Error ratio\tTime taken"
-                   mapM_ (process1 fp) fs where
-  process1 path x = when (takeExtension x == ".txt") $
-    do content <- readFile (path </> x)
-       let (toks, ps, _err1, err2) = string2PieceC content
-           t                       = seq (length (show (head ps))) (return ())
-           ErrorNrs i d e          = countErrors err2
-           errRat                  = errorRatio err2 toks
-           nrOfChords              = length (mergeDups toks)
-       t1 <- getCPUTime
-       t
-       t2 <- getCPUTime
-       let diff = fromIntegral (t2 - t1) / (1000000000 :: Float)
-       mapM_ putStr (intersperse "\t" [ x, show (length ps)
-                                      , show i, show d, show e, show (i+d+e)
-                                      , show nrOfChords, showFloat errRat
-                                      , showFloat diff ++ "\n"])
-
--- | Shows a Float with three decimal places
-showFloat :: Float -> String
-showFloat =   show . (/ (1000 :: Float)) . fromIntegral 
-            . (round :: Float -> Int) . (* 1000)
-
-data ErrorNrs = ErrorNrs { ins :: Int, del :: Int, delEnd :: Int }
-
--- datatype for storing the number of different error types
-instance Show ErrorNrs where 
-   show (ErrorNrs i d e) = show i ++ " insertions, " ++ show d 
-        ++ " deletions and " ++ show e ++ " unconsumed tokens"
-
-
--- Counts the number of insertions and deletions
-countErrors :: [Error (Int,Int)] -> ErrorNrs
-countErrors [] = ErrorNrs 0 0 0
-countErrors ((Inserted _ _ _):t) = inc1 (countErrors t)
-countErrors ((Deleted _ _ _) :t) = inc2 (countErrors t)
-countErrors ((DeletedAtEnd _):t) = inc3 (countErrors t)
-
-simpleErrorMeasure :: ErrorNrs -> Float
-simpleErrorMeasure (ErrorNrs i d e) = fromIntegral (i + d + e)
-
-errorRatio :: (Eq a) => [Error (Int,Int)] -> [Chord a] -> Float
-errorRatio errs toks = simpleErrorMeasure (countErrors errs) /
-                        genericLength (mergeDups toks)
-
-inc1, inc2, inc3 :: ErrorNrs -> ErrorNrs
-inc1 e = e { ins    = ins e + 1 }
-inc2 e = e { del    = del e + 1 }
-inc3 e = e { delEnd = delEnd e + 1 }
-
--- More concise showing errors, and in IO
-showErrors :: [Error (Int, Int)] -> IO ()
-showErrors l = case countErrors l of
-                 ErrorNrs i d e -> putStrLn (   show i ++ " insertions, " 
-                                      ++ show d ++ " deletions, "
-                                      ++ show e ++ " deletions at the end")
-
-
---------------------------------------------------------------------------------
--- Utils
---------------------------------------------------------------------------------
-
--- Stricter readFile
-hGetContents' :: Handle -> IO [Char]
-hGetContents' hdl = do e <- hIsEOF hdl
-                       if e then return []
-                         else do c <- hGetChar hdl
-                                 cs <- hGetContents' hdl
-                                 return (c:cs)
-
-readFile' :: FilePath -> IO [Char]
-readFile' fn = do hdl <- openFile fn ReadMode
-                  xs <- hGetContents' hdl
-                  hClose hdl
-                  return xs
-                  
-readDataDir :: FilePath -> IO [FilePath]
-readDataDir fp = 
-  do fs <- getDirectoryContents fp
-     return . sort $ filter (\str -> str =~ biabPat) fs
diff --git a/Main.hs b/Main.hs
deleted file mode 100644
--- a/Main.hs
+++ /dev/null
@@ -1,173 +0,0 @@
-{-# OPTIONS_GHC -Wall #-}
-
-module Main where
-
--- Libs
-import System.Console.ParseArgs hiding (args) -- cabal install parseargs
-import System.FilePath
-import System.IO
-import Data.Maybe (isJust, fromJust)
-import Data.List (unzip4)
-import Control.Monad (when)
-
--- Music stuff
-import MIR.Run
-
--- Parallelism
-import Control.Parallel.Strategies
-
---------------------------------------------------------------------------------
--- Command-line arguments
---------------------------------------------------------------------------------
-
-data MyArgs = SourceInputString | SourceInputFile | TargetInputFile 
-            | InputDir | OpMode | Print | MaxErrorRate | WriteGT
-  deriving (Eq, Ord, Show)
-
-myArgs :: [Arg MyArgs]
-myArgs = [
-          Arg { argIndex = MaxErrorRate,
-                argAbbr  = Just 'e',
-                argName  = Just "max-error",
-                argData  = argDataOptional "float" ArgtypeFloat,
-                argDesc  = "Ignore pieces with higher error rate for diff"
-              },
-          Arg { argIndex = SourceInputString,
-                argAbbr  = Just 'c',
-                argName  = Just "chords",
-                argData  = argDataOptional "string" ArgtypeString,
-                argDesc  = "Input Chord Sequence to parse"
-              },
-          Arg { argIndex = SourceInputFile,
-                argAbbr  = Just '1',
-                argName  = Just "sfile",
-                argData  = argDataOptional "filepath" ArgtypeString,
-                argDesc  = "Input file (source for diff)"
-              },
-          Arg { argIndex = TargetInputFile,
-                argAbbr  = Just '2',
-                argName  = Just "tfile",
-                argData  = argDataOptional "filepath" ArgtypeString,
-                argDesc  = "Input file (target for diff)"
-              },
-          Arg { argIndex = InputDir,
-                argAbbr  = Just 'd',
-                argName  = Just "dir",
-                argData  = argDataOptional "directory" ArgtypeString,
-                argDesc  = "Input directory (to process all files within)"
-              },
-          Arg { argIndex = OpMode,
-                argAbbr  = Just 'm',
-                argName  = Just "mode",
-                argData  = argDataRequired "parse|gdiff|stdiff"
-                             ArgtypeString,
-                argDesc  = "One of \"parse\", \"diff\", or \"stdiff\""
-              },
-          Arg { argIndex = Print,
-                argAbbr  = Just 'p',
-                argName  = Just "print",
-                argData  = Nothing,
-                argDesc  = "Set this flag to generate a .png for an input file"
-              },
-          Arg { argIndex = WriteGT,
-                argAbbr  = Just 'g',
-                argName  = Just "writegt",
-                argData  = argDataOptional "filepath" ArgtypeString,
-                argDesc  = "Write ground truth to file"
-              }
-         ]
-
---------------------------------------------------------------------------------
--- Main
---------------------------------------------------------------------------------
-
-
-data MatchMode = STDiff | GDiff
-  deriving (Eq, Ord, Show)
-
-err1, err2, err3 :: String
-err1 = "Use a source file, or a directory."
-err2 = "Use a source file and a target file, or a directory."
-err3 = "Use a source file and optionally a target file."
-
-main :: IO ()
-main = do args <- parseArgsIO ArgsComplete myArgs
-          let mode      = getRequiredArg args OpMode
-              prnt      = gotArg args Print
-          case mode of
-            "parse"  -> mainParse prnt
-            "gdiff"  -> mainDiff  False GDiff    -- diffs cannot be printed
-            "stdiff" -> mainDiff  False STDiff
-            s        -> usageError args ("Unknown mode: " ++ s)
-
-mainParse :: Bool -> IO ()
-mainParse p = do args <- parseArgsIO ArgsComplete myArgs
-                 -- cdir <- getCurrentDirectory
-                 let cStr = getArgString args SourceInputString
-                     mf1  = getArgString args SourceInputFile
-                     mf2  = getArgString args TargetInputFile
-                     mdir = getArgString args InputDir
-                 case (cStr, mf1,mf2,mdir, p) of
-                   -- parse a string of chords
-                   (Just c, Nothing, Nothing, Nothing , False) 
-                     -> parseTree c
-                   -- Parse one file, show full output
-                   (Nothing, Just f1, Nothing, Nothing , False) 
-                     -> readFile' f1 >>= parseTree
-                   -- Parse all files in one dir, show condensed output
-                   (Nothing, Nothing, Nothing, Just dir, False) 
-                     -> testDir dir
-                   _ -> usageError args err1   
-
-                   
-                   
-mainDiff :: Bool -> MatchMode -> IO ()
-mainDiff p m =
-     do args <- parseArgsIO ArgsComplete myArgs
-        let mf1   = getArg args SourceInputFile
-            mf2   = getArg args TargetInputFile
-            mdir  = getArg args InputDir
-            me    = getArg args MaxErrorRate
-            gt    = getArg args WriteGT
-        case (mf1,mf2,mdir,p) of
-          -- Parse source and target file, show full output
-          (Just f1, Just f2, Nothing, False) -> diff m f1 f2
-          -- Diff all files in one dir, show condensed output
-          (Nothing, Nothing, Just dir, False) -> testDirMatch m me gt dir 
-          _                                   -> usageError args err2
-
-diff :: MatchMode -> String -> String -> IO ()
-diff m f1 f2 = do (toks1, ts1, _, _) <- readFile' f1 >>= return . string2PieceC
-                  (toks2, ts2, _, _) <- readFile' f2 >>= return . string2PieceC
-                  case m of
-                    STDiff -> putStrLn (diffChords toks1 toks2)
-                    GDiff  -> print (diffPiece (head ts1) (head ts2))
-                    
-                       
-filterNonQuery :: [FilePath] -> [FilePath]                       
-filterNonQuery = concat . map snd . filter ((>1) . length . snd) . getClassSizes
-
-testDirMatch :: MatchMode -> Maybe Float -> Maybe FilePath -> FilePath -> IO ()
-testDirMatch m me od fp = 
-  do fs <- readDataDir fp
-     let process f   = do s <- readFile' (fp </> f)
-                          let (toks, ps, _, errs) = string2PieceC s
-                          return (f, toks, head ps, errorRatio errs toks)
-     (fs', toks, ps, errs) <- fmap unzip4 (mapM process fs)
-     when (isJust od) $ writeGroundTruth fs' (fromJust od)
-     let fsq = filterNonQuery fs'
-     putStr "true\ntrue\n"
-     mapM_ (putStr . (++ "\t")) fsq
-     putChar '\n'
-     mapM_ (putStr . (++ "\t"). getId) fs'
-     putStrLn ""
-     let runDiff df l = [ [ df me ex ey x y | (y,ey) <- l ]
-                        | ((x,ex),i) <- zip l (map getId fs'), i `elem` fsq ]
-         printLine l = putStrLn (foldr (\a b -> showFloat a ++ "\t" ++ b) "" l)
-                         >> hFlush stdout
-         undf = error "stdiff should not inspect parsing results"
-     let r = case m of
-               STDiff -> runDiff diffChordsLen (zip toks (repeat undf))
-               GDiff  -> runDiff diffPieceLen  (zip ps   errs)
-              `using` parList rdeepseq
-     sequence_ [ printLine x | x <- r]
diff --git a/Setup.hs b/Setup.hs
--- a/Setup.hs
+++ b/Setup.hs
@@ -1,6 +1,6 @@
-module Main (main) where
-
-import Distribution.Simple
-
-main :: IO ()
-main = defaultMain
+module Main (main) where
+
+import Distribution.Simple
+
+main :: IO ()
+main = defaultMainWithHooks simpleUserHooks
diff --git a/Text/ParserCombinators/UU.hs b/Text/ParserCombinators/UU.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU.hs
+++ /dev/null
@@ -1,26 +0,0 @@
--- | The non-exported module "Text.ParserCombinators.UU.Examples" contains a list of examples of how to use the main functionality of this library which demonstrates:
---
--- * how to write basic parsers
---
--- * how to to write ambiguous parsers
---
--- * how the error correction works
---
--- * how to fine tune your parsers to get rid of ambiguities
---
--- * how to use the monadic interface
---
--- * what kind of error messages you can get if you write erroneous parsers
---
--- * how to use the permutation/merging parsers
---
--- * to see the parsers in action load the module "Text.ParserCombinators.UU.Examples" in @ghci@ and type @main@ or @demo_merge@, while looking at the corresponding code
---
-
-module Text.ParserCombinators.UU ( module Text.ParserCombinators.UU.Core
-                                 , module Text.ParserCombinators.UU.Derived
-) where
-import Text.ParserCombinators.UU.Core
-import Text.ParserCombinators.UU.Derived
-
-
diff --git a/Text/ParserCombinators/UU/BasicInstances.hs b/Text/ParserCombinators/UU/BasicInstances.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/BasicInstances.hs
+++ /dev/null
@@ -1,167 +0,0 @@
-{-# LANGUAGE  RankNTypes, 
-              GADTs,
-              MultiParamTypeClasses,
-              FunctionalDependencies, 
-              FlexibleInstances, 
-              FlexibleContexts, 
-              UndecidableInstances,
-              NoMonomorphismRestriction,
-              TypeSynonymInstances #-}
-
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% Some Instances        %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-module Text.ParserCombinators.UU.BasicInstances where
-import Text.ParserCombinators.UU.Core
-import Data.Maybe
-import qualified Data.List as L
-import Debug.Trace
-import Prelude hiding (null, head, tail, span)
-
-data Error  pos =    Inserted String pos Strings
-                   | Deleted  String pos Strings
-                   | DeletedAtEnd String
-
-instance (Show pos) => Show (Error  pos) where 
- show (Inserted s pos expecting) = "-- >    Inserted " ++  s ++ " at position " ++ show pos ++  show_expecting  expecting 
- show (Deleted  t pos expecting) = "-- >    Deleted  " ++  t ++ " at position " ++ show pos ++  show_expecting  expecting 
- show (DeletedAtEnd t)           = "-- >    The token " ++ t ++ " was not consumed by the parsing process."
-
-show_errors :: (Show a) => [a] -> IO ()
-show_errors = sequence_ . (map (putStrLn . show))
-
-show_expecting :: [String] -> String
-show_expecting [a]    = " expecting " ++ a
-show_expecting (a:as) = " expecting one of [" ++ a ++ concat (map (", " ++) as) ++ "]"
-show_expecting []     = " expecting nothing"
-
-data Str a s loc = Str { input    :: s
-                       , msgs     :: [Error loc]
-                       , pos      :: loc
-                       , deleteOk :: !Bool}
-
-class Stream s t | s -> t where
-   uncons :: s -> Maybe (t, s)
-   null :: s -> Bool
-   null = isNothing . uncons
-   head :: s -> t
-   head = fst . fromMaybe (error "Cannot get head at end of stream.") . uncons
-   tail :: s -> s
-   tail = snd . fromMaybe (error "Cannot get tail at end of stream.") . uncons
-   span :: (t -> Bool) -> s -> ([t], s)
-   span p s = case uncons s of
-                 Nothing    -> ([], s)
-                 Just (h,t) -> if   p h
-                               then let (a,b) = span p t
-                                    in  (h:a,b)
-                               else ([], s)
-   stripPrefix :: Eq t => [t] -> s -> Maybe s
-   stripPrefix []     s = Just s
-   stripPrefix (x:xs) s = do (h,t) <- uncons s
-                             if h == x
-                              then stripPrefix xs t
-                              else Nothing
-
-instance IsLocationUpdatedBy (Int,Int) Char where
-   advance (line,pos) c = case c of
-                          '\n' ->  (line+1, 0) 
-                          '\t' ->  (line  , pos + 8 - (pos-1) `mod` 8)
-                          _    ->  (line  , pos + 1)
-
-instance IsLocationUpdatedBy loc a => IsLocationUpdatedBy loc [a] where
-   advance  = foldl advance 
-
-instance (Show a,  loc `IsLocationUpdatedBy` a, Stream s a) => Provides  (Str a s loc)  (a -> Bool, String, a)  a where
-       splitState (p, msg, a) k (Str  tts   msgs pos  del_ok) 
-          = show_attempt ("Try Predicate: " ++ msg ++ "\n") (
-            let ins exp =       (5, k a (Str tts (msgs ++ [Inserted (show a)  pos  exp]) pos  False))
-                del exp =       (5, splitState (p,msg, a) 
-                                    k
-                                    (Str (tail tts) 
-                                         (msgs ++ [Deleted  (show(head tts))  pos  exp]) 
-                                         (advance pos (head tts))
-                                         True ))
-            in case uncons tts of
-               Just (t,ts) ->  if p t 
-                               then  show_symbol ("Accepting symbol: " ++ show t ++ " at position: " ++ show pos ++"\n") 
-                                     (Step 1 (k t (Str ts msgs (advance pos t) True)))
-                               else  Fail [msg] (ins: if del_ok then [del] else [])
-               _           ->  Fail [msg] [ins]
-            )
-
-instance (Ord a, Show a, loc `IsLocationUpdatedBy`  a, Stream s a) => Provides  (Str  a s loc)  (a,a)  a where
-       splitState a@(low, high) = splitState (\ t -> low <= t && t <= high, show low ++ ".." ++ show high, low)
-
-instance (Eq a, Show a, loc `IsLocationUpdatedBy`  a, Stream s a) => Provides  (Str  a s loc)  a  a where
-       splitState a  = splitState ((==a), show a, a) 
-
-instance (Show a, Stream s a) => Eof (Str a s loc) where
-       eof (Str  i        _    _    _    )                = null i
-       deleteAtEnd (Str s msgs pos ok )                   = do (i,ii) <- uncons s
-                                                               return (5, Str ii (msgs ++ [DeletedAtEnd (show i)]) pos ok)
-
-
-instance  Stores (Str a s loc) (Error loc) where
-       getErrors   (Str  inp      msgs pos ok    )     = (msgs, Str inp [] pos ok)
-
-instance  HasPosition (Str a s loc) loc where
-       getPos   (Str  inp      msgs pos ok    )        = pos
-
--- pMunch
-
-data Munch a = Munch (a -> Bool) String
-
-instance (Show a, loc `IsLocationUpdatedBy` [a], Stream s a) => Provides (Str a s loc) (Munch a) [a] where 
-       splitState (Munch p x) k inp@(Str tts msgs pos del_ok)
-          =    show_attempt ("Try Munch: " ++ x ++ "\n") (
-               let (munched, rest) = span p tts
-                   l               = length munched
-               in if l > 0 then show_munch ("Accepting munch: " ++ x ++ " " ++ show munched ++  show pos ++ "\n") 
-                                (Step l (k munched (Str rest msgs (advance pos munched)  (l>0 || del_ok))))
-                           else show_munch ("Accepting munch: " ++ x ++ " as emtty munch " ++ show pos ++ "\n") (k [] inp)
-               )
-
--- | Parse the longest prefix of tokens obeying the predicate.
-pMunch :: (Provides st (Munch a) [a]) => (a -> Bool) -> P st [a]
-pMunch  p   = pSymExt Zero Nothing  (Munch p "") -- the empty case is handled above
-pMunchL p l = pSymExt Zero Nothing  (Munch p l) -- the empty case is handled above
-
-
-data Token a = Token [a] Int -- the Int value represents the cost for inserting such a token
-
-instance (Show a, Eq a, loc `IsLocationUpdatedBy` a, Stream s a) => Provides (Str a s loc) (Token a) [a] where 
-  splitState tok@(Token  as cost) k (Str tts msgs pos del_ok)
-   =  let l = length as
-          msg = show as 
-      in  show_attempt ("Try Token: " ++ show as ++ "\n") (
-          case stripPrefix as tts of
-          Nothing  ->  let ins exp =  (cost, k as             (Str tts         (msgs ++ [Inserted msg               pos  exp])   pos    False))
-                           del exp =  (5,    splitState tok k (Str (tail tts)  (msgs ++ [Deleted  (show(head tts))  pos  exp])  (advance pos [(head tts)]) True ))
-                       in if null tts then  Fail [msg] [ins]
-                                      else  Fail [msg] (ins: if del_ok then [del] else [])
-          Just rest -> show_tokens ("Accepting token: " ++ show as ++"\n") 
-                       (Step l (k as (Str rest msgs (advance pos as) True)))
-          )
-
--- | Parse a list of primitive tokens (for example characters).
-pToken :: (Provides state (Token a) token) => [a] -> P state token
-pToken     as   =   pTokenCost as 5
-
--- | Parse a list of primitive tokens (for example characters) with a certain cost.
-pTokenCost :: (Provides state (Token a) token) => [a] -> Int -> P state token
-pTokenCost as c =   if L.null as then error "call to pToken with empty token"
-                    else pSymExt (length as) Nothing (Token as c)
-                    where length [] = Zero
-                          length (_:as) = Succ (length as)
-
-show_tokens :: String -> b -> b
-show_tokens m v =   {- trace m -}  v
-
-show_munch :: String -> b -> b
-show_munch  m v =   {- trace m -}  v
-
-show_symbol :: String -> b -> b
-show_symbol m v =  {-  trace m -}  v
-
-show_attempt m v = {- trace m -} v
diff --git a/Text/ParserCombinators/UU/BasicInstances/List.hs b/Text/ParserCombinators/UU/BasicInstances/List.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/BasicInstances/List.hs
+++ /dev/null
@@ -1,38 +0,0 @@
-{-# LANGUAGE  FlexibleInstances,
-              MultiParamTypeClasses,
-              FlexibleContexts,
-              RankNTypes #-}
-
-module Text.ParserCombinators.UU.BasicInstances.List (
-   Parser,
-   createStr,
-   
-   -- From BasicInstances
-   pToken,
-   pTokenCost,
-   pMunch,
-   show_errors,
-   show_expecting
-   ) where
-
-import Text.ParserCombinators.UU.BasicInstances
-import Text.ParserCombinators.UU.Core
-import qualified Data.List as L
-
-instance Stream [a] a where
-   uncons (x:xs) = Just (x, xs)
-   uncons _      = Nothing
-   null          = L.null
-   head          = L.head
-   tail          = L.tail
-   span          = L.span
-   stripPrefix   = L.stripPrefix
-
--- | Abstract type of a parser with input stream @a@, return type @b@ and location representation @c@.
--- Can be @Parser String Char (Int, Int)@ for example
-type Parser a b c = Stream a d => P (Str d a c) b
--- type Parser a b c = P (Str a [a] c) b
-
--- | @`createStr`@ creates a @`Str`@ state from a list and a location representation.
-createStr :: Stream [t] t => [t] -> loc -> Str t [t] loc
-createStr ls initloc = Str ls [] initloc True
diff --git a/Text/ParserCombinators/UU/BasicInstances/String.hs b/Text/ParserCombinators/UU/BasicInstances/String.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/BasicInstances/String.hs
+++ /dev/null
@@ -1,25 +0,0 @@
-{-# LANGUAGE  FlexibleContexts,
-              RankNTypes #-}
-
-module Text.ParserCombinators.UU.BasicInstances.String (
-   Parser,
-   createStr,
-   
-   -- From BasicInstances
-   pToken,
-   pTokenCost,
-   pMunch,
-   show_errors,
-   show_expecting
-   ) where
-
-import Text.ParserCombinators.UU.Core
-import Text.ParserCombinators.UU.BasicInstances
-import qualified Text.ParserCombinators.UU.BasicInstances.List as BL
-
--- | Basic type of a parser with returntype @a@.
-type Parser a = P (Str Char String (Int, Int)) a
-
--- | @`createStr`@ creates a @`Str`@ state from a @String@.
-createStr :: String -> Str Char String (Int, Int)
-createStr ls = BL.createStr ls (0,0)
diff --git a/Text/ParserCombinators/UU/Core.hs b/Text/ParserCombinators/UU/Core.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/Core.hs
+++ /dev/null
@@ -1,600 +0,0 @@
-{-# LANGUAGE  RankNTypes, 
-              GADTs,
-              MultiParamTypeClasses,
-              FunctionalDependencies #-}
-
--- | The module `Core` contains the basic functionality of the parser library. 
---   It  uses the  breadth-first module  to realise online generation of results, the error
---   correction administration, dealing with ambigous grammars; it defines the types  of the elementary  parsers
---   and  recognisers involved.For typical use cases of the libray see the module @"Text.ParserCombinators.UU.Examples"@
-
-module Text.ParserCombinators.UU.Core ( module Text.ParserCombinators.UU.Core
-                                      , module Control.Applicative) where
-import Control.Applicative  hiding  (many, some, optional)
-import Data.Char
-import Debug.Trace
-import Data.Maybe
-
-
-infix   2  <?>    -- should be the last element in a sequence of alternatives
-infixl  3  <<|>   -- intended use p <<|> q <<|> r <|> x <|> y <?> z
-infixl  3  <-|->  -- an alternative for <|> which does not compare the lengths, to be used in permutation parsers
-
--- ** `Provides'
-
--- | The function `splitState` playes a crucial role in splitting up the state. 
---   The `symbol` parameter tells us what kind of thing, and even which value of that kind, is expected from the input.
---   The state  and  and the symbol type together determine what kind of token has to be returned. Since the function is overloaded we do not have to invent 
---   all kind of different names for our elementary parsers.
-class  Provides state symbol token | state symbol -> token  where
-       splitState   ::  symbol -> (token -> state  -> Steps a) -> state -> Steps a
-
--- ** `Eof'
-
-class Eof state where
-       eof          ::  state   -> Bool
-       deleteAtEnd  ::  state   -> Maybe (Cost, state)
-
--- ** `Location` 
--- | The input state may contain a location which can be used in error messages. Since we do not want to fix our input to be just a @String@ we provide an interface
---   which can be used to advance the location by passing its information in the function splitState
-
-class Show loc => loc `IsLocationUpdatedBy` str where
-    advance::loc -> str -> loc
-
---  ** An extension to @`Alternative`@ which indicates a biased choice
--- | In order to be able to describe greedy parsers we introduce an extra operator, whch indicates a biased choice
-class (Alternative p) => ExtAlternative p where
-  (<<|>)  :: p a -> p a -> p a
-  (<-|->) :: p a -> p a -> p a
-  (<-|->) = (<|>)
-     
-
--- * The  triples containg a  history, a future parser and a recogniser: @`T`@
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% Triples     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- actual parsers
-data T st a  = T  (forall r . (a  -> st -> Steps r)  -> st -> Steps       r  ) --  history parser
-                  (forall r . (      st -> Steps r)  -> st -> Steps   (a, r) ) --  future parser
-                  (forall r . (      st -> Steps r)  -> st -> Steps       r  ) --  recogniser
-
-instance Functor (T st) where
-  fmap f (T ph pf pr) = T  ( \  k -> ph ( k .f ))
-                           ( \  k ->  apply2fst f . pf k) -- pure f <*> pf
-                           pr
-  f <$ (T _ _ pr)     = T  ( pr . ($f)) 
-                           ( \ k st -> push f ( pr k st)) 
-                           pr
-
--- ** Triples are Applicative:  @`<*>`@,  @`<*`@,  @`*>`@ and  @`pure`@
-instance   Applicative (T  state) where
-  T ph pf pr  <*> ~(T qh qf qr)  =  T ( \  k -> ph (\ pr -> qh (\ qr -> k (pr qr))))
-                                      ((apply .) . (pf .qf))
-                                      ( pr . qr)
-  T ph pf pr  <*  ~(T _  _  qr)   = T ( ph. (qr.))  (pf. qr)   (pr . qr)
-  T _  _  pr  *>  ~(T qh qf qr )  = T ( pr . qh  )  (pr. qf)    (pr . qr)            
-  pure a                          = T ($a) ((push a).) id 
-
-instance   Alternative (T  state) where 
-  T ph pf pr  <|> T qh qf qr  =   T (\  k inp  -> ph k inp `best` qh k inp)
-                                    (\  k inp  -> pf k inp `best` qf k inp)
-                                    (\  k inp  -> pr k inp `best` qr k inp)
-  empty                =  T  ( \  k inp  ->  noAlts) ( \  k inp  ->  noAlts) ( \  k inp  ->  noAlts)
-
-{-
--- instance ExtAlternative (T st) where 
--- unfortunatelythis is not possible since we have to make the choice for swapping elsewhere
--}
-
-
-instance ExtAlternative Maybe where
-  Nothing <<|> r        = r
-  l       <<|> Nothing  = l 
-  l       <<|> r        = l -- choosing the high priority alternative ? is this the right choice?
-
-
--- * The  descriptor @`P`@ of a parser, including the tupled parser corresponding to this descriptor
---
-data  P   st  a =  P  (T  st a)         --   actual parsers
-                      (Maybe (T st a))  --   non-empty parsers; Nothing if  they are absent
-                      Nat               --   minimal length
-                      (Maybe a)         --   possibly empty with value 
-
-instance Show (P st a) where
-  show (P _ nt n e) = "P _ " ++ maybe "Nothing" (const "(Just _)") nt ++ " (" ++ show n ++ ") " ++ maybe "Nothing" (const "(Just _)") e
-
-getOneP :: P a b -> Maybe (P a b)
-getOneP (P _ (Just _)  Zero _ )    =  error "The element is a special parser which cannot be combined"
-getOneP (P _ Nothing   l    _ )    =  Nothing
-getOneP (P _ onep      l    ep )   =  Just( P (mkParser onep Nothing)  onep l Nothing)
-
-getZeroP :: P t a -> Maybe (P st a)
-getZeroP (P _ _ l Nothing)         =  Nothing
-getZeroP (P _ _ l pe)              =  Just (P (mkParser Nothing pe) Nothing l pe) -- TODO check for erroneous parsers
-
-mkParser :: Maybe (T st a) -> Maybe a -> T st a
-mkParser np@Nothing   ne@Nothing   =  empty           
-mkParser np@(Just nt) ne@Nothing   =  nt              
-mkParser np@Nothing   ne@(Just a)  =          (pure a)        
-mkParser np@(Just nt) ne@(Just a)  =  (nt <|> pure a) 
-
--- combine creates the non-empty parser 
-combine :: (Alternative f) => Maybe t1 -> Maybe t2 -> t -> Maybe t3
-        -> (t1 -> t -> f a) -> (t2 -> t3 -> f a) -> Maybe (f a)
-combine Nothing   Nothing  _  _     _   _   = Nothing      -- this Parser always fails
-combine (Just p)  Nothing  aq _     op1 op2 = Just (p `op1` aq) 
-combine (Just p)  (Just v) aq nq    op1 op2 = case nq of
-                                              Just nnq -> Just (p `op1` aq <|> v `op2` nnq)
-                                              Nothing  -> Just (p `op1` aq                ) -- rhs contribution is just from empty alt
-combine Nothing   (Just v) _  nq    _   op2 = case nq of
-                                              Just nnq -> Just (v `op2` nnq)  -- right hand side has non-empty part
-                                              Nothing  -> Nothing             -- neither side has non-empty part
-
--- ** Parsers are functors:  @`fmap`@
-instance   Functor (P  state) where 
-  fmap f   (P  ap np l me)   =  let nnp =  fmap (fmap     f)  np
-                                    nep =  f <$> me                                    
-                                in  P (mkParser nnp nep) nnp l nep
-  f <$     (P  ap np l me)   =  let nnp =  fmap (f <$)        np
-                                    nep =  f <$   me                                    
-                                in  P (mkParser nnp  nep) nnp l nep
-
-
--- ** Parsers are Applicative:  @`<*>`@,  @`<*`@,  @`*>`@ and  @`pure`@
-instance   Applicative (P  state) where
-  P ap np  pl pe <*> ~(P aq nq  ql qe)  =  let newnp = combine np pe aq nq (<*>) (<$>)
-                                               newlp = nat_add pl ql
-                                               newep = pe <*> qe
-                                           in  P (mkParser newnp newep) newnp newlp newep
-  P ap np pl pe  <*  ~(P aq nq  ql qe)   = let newnp = combine np pe aq nq (<*) (<$)
-                                               newlp = nat_add pl ql
-                                               newep = pe <* qe
-                                           in  P (mkParser newnp newep) newnp newlp newep
-  P ap np  pl pe  *>  ~(P aq nq ql qe)   = let newnp = combine np pe aq nq (*>)  (flip const)
-                                               newlp = nat_add pl ql
-                                               newep = pe *> qe
-                                           in  P (mkParser newnp newep) newnp newlp newep
-  pure a                                 = P (pure a) Nothing Zero (Just a)
-
-
- 
--- ** Parsers are Alternative:  @`<|>`@ and  @`empty`@ 
-instance   Alternative (P   state) where 
-  P ap np  pl pe <|> P aq nq ql qe 
-    =  let (rl, b) = trace' "calling natMin from <|>" (nat_min pl ql 0)
-           Nothing `alt` q  = q
-           p       `alt` Nothing = p
-           Just p  `alt` Just q  = Just (p <|>q)
-       in  let nnp =  (if b then (nq `alt` np) else (np `alt` nq))
-               nep =  if b then trace' "calling pe" pe else trace' "calling qe" qe 
-           in  P (mkParser nnp nep) nnp rl nep
-  empty  =  P  empty empty  Infinite Nothing -- the always failing parser!
-
--- ** An alternative for the Alternative, which is greedy:  @`<<|>`@
--- | `<<|>` is the greedy version of `<|>`. If its left hand side parser can make any progress that alternative is committed. 
--- Can be used to make parsers faster, and even get a complete Parsec equivalent behaviour, with all its (dis)advantages. Use with are!
-
-instance ExtAlternative (P st) where
-  P ap np pl pe <<|> P aq nq ql qe 
-    = let (rl, b) = nat_min pl ql 0
-          bestx :: Steps a -> Steps a -> Steps a
-          bestx = if b then flip best else best
-          choose:: T st a -> T st a -> T st a
-          choose  (T ph pf pr)  (T qh qf qr) 
-             = T  (\ k st -> let left  = norm (ph k st)
-                             in if has_success left then left else left `bestx` qh k st)
-                  (\ k st -> let left  = norm (pf k st)
-                             in if has_success left then left else left `bestx` qf k st) 
-                 (\ k st -> let left  = norm (pr k st)
-                            in if has_success left then left else left  `bestx` qr k st)
-      in   P (choose  ap aq )
-             (maybe np (\nqq -> maybe nq (\npp -> return( choose  npp nqq)) np) nq)
-             rl
-             (pe <|> qe) -- due to the way Maybe is instance of Alternative  the left hand operator gets priority
-  P ap np  pl pe <-|-> P aq nq ql qe 
-    =  let Nothing `alt` q  = q
-           p       `alt` Nothing = p
-           Just p  `alt` Just q  = Just (p <|>q)
-       in  let nnp =  np `alt` nq
-               nep =  pe <|> qe
-           in  P (mkParser nnp nep) nnp pl nep
-
--- ** Parsers can recognise single tokens:  @`pSym`@ and  @`pSymExt`@
---   Many parsing libraries do not make a distinction between the terminal symbols of the language recognised 
---   and the tokens actually constructed from the  input. 
---   This happens e.g. if we want to recognise an integer or an identifier: 
---   we are also interested in which integer occurred in the input, or which identifier. 
---   The function `pSymExt` takes as argument a value of some type `symbol', and returns a value of type `token'.
---   
---   The parser will in general depend on some 
---   state which holds the input. The functional dependency fixes the `token` type, 
---   based on the `symbol` type and the type of the parser `p`.
-
--- | Since `pSymExt' is overloaded both the type and the value of a symbol 
---   determine how to decompose the input in a `token` and the remaining input.
---   `pSymExt` takes two extra parameters: the first describing the minimal number of tokens recognised, 
---   and the second telling whether the symbol can recognise the empty string and the value which is to be returned in that case
-  
-pSymExt ::   (Provides state symbol token) => Nat -> Maybe token -> symbol -> P state token
-pSymExt l e a  = P t (Just t) l e
-                 where t = T ( \ k inp -> splitState a k inp)
-                             ( \ k inp -> splitState a (\ t inp' -> push t (k inp')) inp)
-                             ( \ k inp -> splitState a (\ _ inp' -> k inp') inp)
-
--- | @`pSym`@ covers the most common case of recognsiing a symbol: a single token is removed form the input, 
--- and it cannot recognise the empty string
-pSym    ::   (Provides state symbol token) =>                       symbol -> P state token
-pSym  s   = pSymExt (Succ Zero) Nothing s 
-
-
--- ** Parsers are Monads:  @`>>=`@ and  @`return`@
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% Monads      %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-unParser_h :: P b a -> (a -> b -> Steps r) -> b -> Steps r
-unParser_h (P (T  h   _  _ ) _ _ _ )  =  h
-
-unParser_f :: P b a -> (b -> Steps r) -> b -> Steps (a, r)
-unParser_f (P (T  _   f  _ ) _ _ _ )  =  f
-
-unParser_r :: P b a -> (b -> Steps r) -> b -> Steps r
-unParser_r (P (T  _   _  r ) _ _ _ )  =  r
-          
--- !! do not move the P constructor behind choices/patern matches
-instance  Monad (P st) where
-       p@(P  ap np lp ep) >>=  a2q = 
-          (P newap newnp (nat_add lp (error "cannot compute minimal length of right hand side of monadic parser")) newep)
-          where (newep, newnp, newap) = case ep of
-                                 Nothing -> (Nothing, t, maybe empty id t) 
-                                 Just a  -> let  P aq nq lq eq = a2q a 
-                                            in  (eq, combine t nq , t `alt` aq)
-                Nothing  `alt` q    = q
-                Just p   `alt` q    = p <|> q
-                t = case np of
-                    Nothing -> Nothing
-                    Just (T h _ _  ) -> Just (T  (  \k -> h (\ a -> unParser_h (a2q a) k))
-                                                 (  \k -> h (\ a -> unParser_f (a2q a) k))
-                                                 (  \k -> h (\ a -> unParser_r (a2q a) k)))
-                combine Nothing     Nothing     = Nothing
-                combine l@(Just _ ) Nothing     =  l
-                combine Nothing     r@(Just _ ) =  r
-                combine (Just l)    (Just r)    = Just (l <|> r)
-       return  = pure 
-
-
--- * Additional useful combinators
--- | The parsers build a list of symbols which are expected at a specific point. 
---   This list is used to report errors.
---   Quite often it is more informative to get e.g. the name of the non-terminal. 
---   The @`<?>`@ combinator replaces this list of symbols by it's righ-hand side argument.
-
-(<?>) :: P state a -> String -> P state a
-P  _  np  pl pe <?> label 
-  = let nnp = case np of
-              Nothing -> Nothing
-              Just ((T ph pf  pr)) -> Just(T ( \ k inp -> replaceExpected (norm  ( ph k inp)))
-                                             ( \ k inp -> replaceExpected (norm  ( pf k inp)))
-                                             ( \ k inp -> replaceExpected (norm  ( pr k inp))))
-        replaceExpected :: Steps a -> Steps a
-        replaceExpected (Fail _ c) = (Fail [label] c)
-        replaceExpected others     = others
-    in P (mkParser nnp  pe) nnp pl pe
-
-
--- | `micro` inserts a `Cost` step into the sequence representing the progress the parser is making; for its use see `Text.ParserCombinators.UU.Examples` 
-micro :: P state a -> Int -> P state a
-P _  np  pl pe `micro` i  
-  = let nnp = case np of
-              Nothing -> Nothing
-              Just ((T ph pf  pr)) -> Just(T ( \ k st -> ph (\ a st -> Micro i (k a st)) st)
-                                             ( \ k st -> pf (Micro i .k) st)
-                                             ( \ k st -> pr (Micro i .k) st))
-    in P (mkParser nnp pe) nnp pl pe
-
---   For the precise functioning of the combinators we refer to the technical report mentioned in the README file
---   @`amb`@ converts an ambiguous parser into a parser which returns a list of possible recognitions.
-amb :: P st a -> P st [a]
-amb (P _  np  pl pe) 
- = let  combinevalues  :: Steps [(a,r)] -> Steps ([a],r)
-        combinevalues lar  =   Apply (\ lar -> (map fst lar, snd (head lar))) lar
-        nnp = case np of
-              Nothing -> Nothing
-              Just ((T ph pf  pr)) -> Just(T ( \k     ->  removeEnd_h . ph (\ a st' -> End_h ([a], \ as -> k as st') noAlts))
-                                             ( \k inp ->  combinevalues . removeEnd_f $ pf (\st -> End_f [k st] noAlts) inp)
-                                             ( \k     ->  removeEnd_h . pr (\ st' -> End_h ([undefined], \ _ -> k  st') noAlts)))
-        nep = (fmap pure pe)
-    in  P (mkParser nnp nep) nnp pl nep
-
-
--- | `getErrors` retreives the correcting steps made since the last time the function was called. The result can, 
---   using a monad, be used to control how to proceed with the parsing process.
-
-class state `Stores`  error | state -> error where
-  getErrors    ::  state   -> ([error], state)
-
--- | The class @`Stores`@ is used by the function @`pErrors`@ which retreives the generated correction spets since the last time it was called.
---
-pErrors :: Stores st error => P st [error]
-pErrors = let nnp = Just (T ( \ k inp -> let (errs, inp') = getErrors inp in k    errs    inp' )
-                            ( \ k inp -> let (errs, inp') = getErrors inp in push errs (k inp'))
-                            ( \ k inp -> let (errs, inp') = getErrors inp in            k inp' ))
-              nep =  (Just (error "pErrors cannot occur in lhs of bind"))  -- the errors consumed cannot be determined statically!
-          in P (mkParser nnp  Nothing) nnp Zero Nothing
-
-
--- | @`pPos`@ retreives the correcting steps made since the last time the function was called. The result can, 
---   using a monad, be used to control how to--    proceed with the parsing process.
-
-class state `HasPosition`  pos | state -> pos where
-  getPos    ::  state   -> pos
-
-pPos :: HasPosition st pos => P st pos
-pPos =  let nnp = Just ( T ( \ k inp -> let pos = getPos inp in k    pos    inp )
-                       ( \ k inp -> let pos = getPos inp in push pos (k inp))
-                       ( \ k inp -> let pos = getPos inp in           k inp ))
-            nep =  Just (error "pPos cannot occur in lhs of bind")  -- the errors consumed cannot be determined statically!
-        in P (mkParser nnp Nothing) nnp Zero Nothing
-
--- | The function `pEnd` should be called at the end of the parsing process. It deletes any unconsumed input, turning them into error messages
-
-pEnd    :: (Stores st error, Eof st) => P st [error]
-pEnd    = let nnp = Just ( T ( \ k inp ->   let deleterest inp =  case deleteAtEnd inp of
-                                                  Nothing -> let (finalerrors, finalstate) = getErrors inp
-                                                             in k  finalerrors finalstate
-                                                  Just (i, inp') -> Fail []  [const (i,  deleterest inp')]
-                                            in deleterest inp)
-                             ( \ k   inp -> let deleterest inp =  case deleteAtEnd inp of
-                                                  Nothing -> let (finalerrors, finalstate) = getErrors inp
-                                                             in push finalerrors (k finalstate)
-                                                  Just (i, inp') -> Fail [] [const ((i, deleterest inp'))]
-                                            in deleterest inp)
-                             ( \ k   inp -> let deleterest inp =  case deleteAtEnd inp of
-                                                  Nothing -> let (finalerrors, finalstate) = getErrors inp
-                                                             in  (k finalstate)
-                                                  Just (i, inp') -> Fail [] [const (i, deleterest inp')]
-                                            in deleterest inp))
-         in P (mkParser nnp  Nothing) nnp Zero Nothing
-           
-
--- The function @`parse`@ shows the prototypical way of running a parser on a some specific input
--- By default we use the future parser, since this gives us access to partal result; future parsers are expected to run in less space.
-
-parse :: (Eof t) => P t a -> t -> a
-parse   (P (T _  pf _) _ _ _)  = fst . eval . pf  (\ rest   -> if eof rest then         Step 0 (Step 0 (Step 0 (Step 0 (error "ambiguous parser?"))))  
-                                                               else error "pEnd missing?")
-parse_h (P (T ph _  _) _ _ _)  = fst . eval . ph  (\ a rest -> if eof rest then push a (Step 0 (Step 0 (Step 0 (Step 0 (error "ambiguous parser?"))))) 
-                                                                           else error "pEnd missing?") 
-
--- | @`pSwitch`@ takes the current state and modifies it to a different type of state to which its argument parser is applied. 
---   The second component of the result is a function which  converts the remaining state of this parser back into a valuee of the original type.
---   For the second argumnet to @`pSwitch`@  (say split) we expect the following to hold:
---   
--- >  let (n,f) = split st in f n to be equal to st
-
-pSwitch :: (st1 -> (st2, st2 -> st1)) -> P st2 a -> P st1 a -- we require let (n,f) = split st in f n to be equal to st
-pSwitch split (P _ np pl pe)    
-   = let nnp = fmap (\ (T ph pf pr) ->T (\ k st1 ->  let (st2, back) = split st1
-                                                     in ph (\ a st2' -> k a (back st2')) st2)
-                                        (\ k st1 ->  let (st2, back) = split st1
-                                                     in pf (\st2' -> k (back st2')) st2)
-                                        (\ k st1 ->  let (st2, back) = split st1
-                                                     in pr (\st2' -> k (back st2')) st2)) np
-     in P (mkParser nnp pe) nnp pl pe
-
--- * Maintaining Progress Information
--- | The data type @`Steps`@ is the core data type around which the parsers are constructed.
---   It is a describes a tree structure of streams containing (in an interleaved way) both the online result of the parsing process,
---   and progress information. Recognising an input token should correspond to a certain amount of @`Progress`@, 
---   which tells how much of the input state was consumed. 
---   The @`Progress`@ is used to implement the breadth-first search process, in which alternatives are
---   examined in a more-or-less synchonised way. The meaning of the various @`Step`@ constructors is as follows:
---
---   [@`Step`@] A token was succesfully recognised, and as a result the input was 'advanced' by the distance  @`Progress`@
---
---   [@`Apply`@] The type of value represented by the `Steps` changes by applying the function parameter.
---
---   [@`Fail`@] A correcting step has to made to the input; the first parameter contains information about what was expected in the input, 
---   and the second parameter describes the various corrected alternatives, each with an associated `Cost`
---
---   [@`Micro`@] A small cost is inserted in the sequence, which is used to disambiguate. Use with care!
---
---   The last two alternatives play a role in recognising ambigous non-terminals. For a full description see the technical report referred to from the README file..
-
-type Cost = Int
-type Progress = Int
-type Strings = [String]
-
-data  Steps   a  where
-      Step   ::                 Progress       ->  Steps a                             -> Steps   a
-      Apply  ::  forall a b.    (b -> a)       ->  Steps   b                           -> Steps   a
-      Fail   ::                 Strings        ->  [Strings   ->  (Cost , Steps   a)]  -> Steps   a
-      Micro   ::                Cost           ->  Steps a                             -> Steps   a
-      End_h  ::                 ([a] , [a]     ->  Steps r)    ->  Steps   (a,r)       -> Steps   (a, r)
-      End_f  ::                 [Steps   a]    ->  Steps   a                           -> Steps   a
-
-apply       :: Steps (b -> a, (b, r)) -> Steps (a, r)
-apply       =  Apply (\(b2a, br) -> let (b, r) = br in (b2a b, r)) 
-
-push        :: v -> Steps   r -> Steps   (v, r)
-push v      =  Apply (\ r -> (v, r))
-
-apply2fst   :: (b -> a) -> Steps (b, r) -> Steps (a, r)
-apply2fst f = Apply (\ (b, r) -> (f b, r)) 
-
-succeedAlways :: Steps a
-succeedAlways = let steps = Step 0 steps in steps
-
-failAlways :: Steps a
-failAlways  =  Fail [] [const (0, failAlways)]
-
-noAlts :: Steps a
-noAlts      =  Fail [] []
-
-has_success :: Steps t -> Bool
-has_success (Step _ _) = True
-has_success _        = False 
-
--- ! @`eval`@ removes the progress information from a sequence of steps, and constructs the value embedded in it.
---   If you are really desparate to see how your parsers are making progress (e.g. when you have written an ambiguous parser, and you cannot find the cause of
---   the exponential blow-up of your parsing process, you may switch on the trace in the function @`eval`@
--- 
-eval :: Steps   a      ->  a
-eval (Step  n    l)     =   {- trace ("Step " ++ show n ++ "\n")-} (eval l)
-eval (Micro  _    l)    =   eval l
-eval (Fail   ss  ls  )  =   trace' ("expecting: " ++ show ss) (eval (getCheapest 3 (map ($ss) ls))) 
-eval (Apply  f   l   )  =   f (eval l)
-eval (End_f   _  _   )  =   error "dangling End_f constructor"
-eval (End_h   _  _   )  =   error "dangling End_h constructor"
-
-
-
--- | @`norm`@ makes sure that the head of the seqeunce contains progress information. It does so by pushing information about the result (i.e. the @Apply@ steps) backwards.
---
-norm ::  Steps a ->  Steps   a
-norm     (Apply f (Step   p    l  ))   =   Step  p (Apply f l)
-norm     (Apply f (Micro  c    l  ))   =   Micro c (Apply f l)
-norm     (Apply f (Fail   ss   ls ))   =   Fail ss (applyFail (Apply f) ls)
-norm     (Apply f (Apply  g    l  ))   =   norm (Apply (f.g) l)
-norm     (Apply f (End_f  ss   l  ))   =   End_f (map (Apply f) ss) (Apply f l)
-norm     (Apply f (End_h  _    _  ))   =   error "Apply before End_h"
-norm     steps                         =   steps
-
-applyFail :: (c -> d) -> [a -> (b, c)] -> [a -> (b, d)]
-applyFail f  = map (\ g -> \ ex -> let (c, l) =  g ex in  (c, f l))
-
--- | The function @best@ compares two streams
-best :: Steps a -> Steps a -> Steps a
-x `best` y =   norm x `best'` norm y
-
-best' :: Steps   b -> Steps   b -> Steps   b
-End_f  as  l            `best'`  End_f  bs r          =   End_f (as++bs)  (l `best` r)
-End_f  as  l            `best'`  r                    =   End_f as        (l `best` r)
-l                       `best'`  End_f  bs r          =   End_f bs        (l `best` r)
-End_h  (as, k_h_st)  l  `best'`  End_h  (bs, _) r     =   End_h (as++bs, k_h_st)  (l `best` r)
-End_h  as  l            `best'`  r                    =   End_h as (l `best` r)
-l                       `best'`  End_h  bs r          =   End_h bs (l `best` r)
-Fail  sl  ll     `best'`  Fail  sr rr     =   Fail (sl ++ sr) (ll++rr)
-Fail  _   _      `best'`  r               =   r   -- <----------------------------- to be refined
-l                `best'`  Fail  _  _      =   l
-Step  n   l      `best'`  Step  m  r
-    | n == m                              =   Step n (l  `best` r)     
-    | n < m                               =   Step n (l  `best`  Step (m - n)  r)
-    | n > m                               =   Step m (Step (n - m)  l  `best` r)
-ls@(Step _  _)    `best'`  Micro _ _        =  ls
-Micro _    _      `best'`  rs@(Step  _ _)   =  rs
-ls@(Micro i l)    `best'`  rs@(Micro j r)  
-    | i == j                               =   Micro i (l `best` r)
-    | i < j                                =   ls
-    | i > j                                =   rs
-l                       `best'`  r         =   error "missing alternative in best'" 
-
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% getCheapest  %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-getCheapest :: Int -> [(Int, Steps a)] -> Steps a 
-getCheapest _ [] = error "no correcting alternative found"
-getCheapest n l  =  snd $  foldr (\(w,ll) btf@(c, l)
-                               ->    if w < c   -- c is the best cost estimate thus far, and w total costs on this path
-                                     then let new = (traverse n ll w c) 
-                                          in if new < c then (new, ll) else btf
-                                     else btf 
-                               )   (maxBound, error "getCheapest") l
-
-
-traverse :: Int -> Steps a -> Int -> Int  -> Int 
-traverse 0  _            v c  =  trace' ("traverse " ++ show' 0 v c ++ " choosing" ++ show v ++ "\n") v
-traverse n (Step _   l)  v c  =  trace' ("traverse Step   " ++ show' n v c ++ "\n") (traverse (n -  1 ) l (v-n) c)
-traverse n (Micro _  l)  v c  =  trace' ("traverse Micro  " ++ show' n v c ++ "\n") (traverse n         l v     c)
-traverse n (Apply _  l)  v c  =  {- trace' ("traverse Apply  " ++ show n ++ "\n")-} (traverse n         l v     c)
-traverse n (Fail m m2ls) v c  =  trace' ("traverse Fail   " ++ show m ++ show' n v c ++ "\n") 
-                                 (foldr (\ (w,l) c' -> if v + w < c' then traverse (n -  1 ) l (v+w) c'
-                                                       else c') c (map ($m) m2ls)
-                                 )
-traverse n (End_h ((a, lf))    r)  v c =  traverse n (lf a `best` removeEnd_h r) v c
-traverse n (End_f (l      :_)  r)  v c =  traverse n (l `best` r) v c
-
-show' :: (Show a, Show b, Show c) => a -> b -> c -> String
-show' n v c = "n: " ++ show n ++ " v: " ++ show v ++ " c: " ++ show c
-
-
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% Handling ambiguous paths             %%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
-removeEnd_h     :: Steps (a, r) -> Steps r
-removeEnd_h (Fail  m ls             )  =   Fail m (applyFail removeEnd_h ls)
-removeEnd_h (Step  ps l             )  =   Step  ps (removeEnd_h l)
-removeEnd_h (Apply f l              )  =   error "not in history parsers"
-removeEnd_h (Micro c l              )  =   Micro c (removeEnd_h l)
-removeEnd_h (End_h  (as, k_st  ) r  )  =   k_st as `best` removeEnd_h r 
-
-removeEnd_f      :: Steps r -> Steps [r]
-removeEnd_f (Fail m ls)        =   Fail m (applyFail removeEnd_f ls)
-removeEnd_f (Step ps l)        =   Step ps (removeEnd_f l)
-removeEnd_f (Apply f l)        =   Apply (map' f) (removeEnd_f l) 
-                                   where map' f ~(x:xs)  =  f x : map f xs
-removeEnd_f (Micro c l      )  =   Micro c (removeEnd_f l)
-removeEnd_f (End_f(s:ss) r)    =   Apply  (:(map  eval ss)) s 
-                                                 `best`
-                                          removeEnd_f r
-
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%% Auxiliary Functions and Types        %%%%%%%%%%%%%%%%%%%
--- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
--- * Auxiliary functions and types
--- ** Checking for non-sensical combinations: @`must_be_non_empty`@ and @`must_be_non_empties`@
--- | The function checks wehther its second argument is a parser which can recognise the mety sequence. If so an error message is given
---   using the name of the context. If not then the third argument is returned. This is useful in testing for loogical combinations. For its use see
---   the module Text>parserCombinators.UU.Derived
-
-must_be_non_empty :: [Char] -> P t t1 -> t2 -> t2
-must_be_non_empty msg p@(P _ _ Zero _) _ 
-            = error ("The combinator " ++ msg ++  " requires that it's argument cannot recognise the empty string\n")
-must_be_non_empty _ _  q  = q
-
--- | This function is similar to the above, but can be used in situations where we recognise a sequence of elements separated by other elements. This does not 
---   make sense if both parsers can recognise the empty string. Your grammar is then highly ambiguous.
-
-must_be_non_empties :: [Char] -> P t1 t -> P t3 t2 -> t4 -> t4
-must_be_non_empties  msg (P _ _ Zero _) (P _ _ Zero _ ) _ 
-            = error ("The combinator " ++ msg ++  " requires that not both arguments can recognise the empty string\n")
-must_be_non_empties  msg _  _ q = q
-
-
--- ** The type @`Nat`@ for describing the minimal number of tokens consumed
--- | The data type @`Nat`@ is used to represent the minimal length of a parser.
---   Care should be taken in order to not evaluate the right hand side of the binary function @`nat-add`@ more than necesssary.
-
-data Nat = Zero
-         | Succ Nat
-         | Infinite
-         deriving  Show
-
-nat_min :: Nat -> Nat -> Int -> (Nat, Bool)
-nat_min _          Zero      _  = trace' "Right Zero in nat_min\n"    (Zero, False)
-nat_min Zero       _         _  = trace' "Left Zero in nat_min\n"     (Zero, True)
-nat_min Infinite   r         _  = trace' "Left Infinite in nat_min\n" (r,    False) 
-nat_min l          Infinite  _  = trace' "Right Infinite in nat_min\n"    (l,    True) 
-nat_min (Succ ll)  (Succ rr) n  = if n > 1000 then error "problem with comparing lengths" 
-                                  else trace' ("Succ in nat_min " ++ show n ++ "\n")         (let (v, b) = nat_min ll  rr (n+1) in (Succ v, b))
-
-nat_add :: Nat -> Nat -> Nat
-nat_add Infinite  _ = trace' "Infinite in add\n" Infinite
-nat_add Zero      r = trace' "Zero in add\n"     r
-nat_add (Succ l)  r = trace' "Succ in add\n"     (Succ (nat_add l r))
-
-get_length :: P a b -> Nat
-get_length (P _ _  l _) = l
-
-trace' :: String -> b -> b
-trace' m v = {- trace m -}  v 
-
-
-
-
-
-
diff --git a/Text/ParserCombinators/UU/Derived.hs b/Text/ParserCombinators/UU/Derived.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/Derived.hs
+++ /dev/null
@@ -1,269 +0,0 @@
-{-# LANGUAGE  RankNTypes, 
-              GADTs,
-              MultiParamTypeClasses,
-              FunctionalDependencies, 
-              FlexibleInstances, 
-              FlexibleContexts, 
-              UndecidableInstances,
-              NoMonomorphismRestriction #-}
-
-module Text.ParserCombinators.UU.Derived where
-import Text.ParserCombinators.UU.Core
-import Control.Monad
-
--- | This module contains a large variety of combinators for list-lile structures. the extension @_ng@ indiactes that 
---   that variant is the non-greedy variant.
---   See the "Text.ParserCombinators.UU.Examples" module for some exmaples of their use.
-
--- * Some common combinators for oft occurring constructs
-
--- | @`pReturn`@ is defined for upwards comptaibility
---
-pReturn :: a -> P str a
-pReturn  = pure
-
--- | @`pFail`@ is defined for upwards comptaibility, and is the unit for @<|>@
---
-pFail :: P str a
-pFail    = empty
-
-infixl 4  <??>
-infixl 2 `opt`
-
--- | Optionally recognize parser 'p'.
--- 
--- If 'p' can be recognized, the return value of 'p' is used. Otherwise,
--- the value 'v' is used. Note that opt is greedy, if you do not want
--- this use @... <|> pure v@  instead. Furthermore, 'p' should not
--- recognise the empty string, since this would make your parser ambiguous!!
-
-opt ::  P st a -> a -> P st a
-p `opt` v       = must_be_non_empty "opt" p (p <<|> pure v) 
-
--- | @pMaybe@ greedily recognises its argument. If not @Nothing@ is returned.
---
-pMaybe :: P st a -> P st (Maybe a)
-pMaybe p = must_be_non_empty "pMaybe" p (Just <$> p `opt` Nothing) 
-
--- | @pEither@ recognises either one of its arguments.
---
-pEither :: P str a -> P str b -> P str (Either a b)
-pEither p q = Left <$> p <|> Right <$> q
-                                                
--- | @<$$>@ is the version of @<$>@ which maps on its second argument 
---
-(<$$>)    ::  (a -> b -> c) -> P st b -> P st (a -> c)
-f <$$> p  =  flip f <$> p
-
--- | @<??>@ parses an optional postfix element and applies its result to its left hand result
---
-(<??>) :: P st a -> P st (a -> a) -> P st a
-p <??> q        = must_be_non_empty "<??>" q (p <**> (q `opt` id))
-
--- | @`pPackes`@ surrounds its third parser with the first and the seond one, keeping only the middle result
-pPacked :: P st b1 -> P st b2 -> P st a -> P st a
-pPacked l r x   =   l *>  x <*   r
-
--- * The collection of iterating combinators, all in a greedy (default) and a non-greedy variant
-
-pFoldr    :: (a -> a1 -> a1, a1) -> P st a -> P st a1
-pFoldr         alg@(op,e)     p =  must_be_non_empty "pFoldr" p pfm
-                                   where pfm = (op <$> p <*> pfm) `opt` e
-
-pFoldr_ng ::  (a -> a1 -> a1, a1) -> P st a -> P st a1
-pFoldr_ng      alg@(op,e)     p =  must_be_non_empty "pFoldr_ng" p pfm 
-                                   where pfm = (op <$> p <*> pfm)  <|> pure e
-
-
-pFoldr1    :: (v -> b -> b, b) -> P st v -> P st b
-pFoldr1        alg@(op,e)     p =  must_be_non_empty "pFoldr1"    p (op <$> p <*> pFoldr     alg p) 
-
-pFoldr1_ng ::  (v -> b -> b, b) -> P st v -> P st b
-pFoldr1_ng     alg@(op,e)     p =  must_be_non_empty "pFoldr1_ng" p (op <$> p <*> pFoldr_ng  alg p)
-
-pFoldrSep    ::  (v -> b -> b, b) -> P st a -> P st v -> P st b
-pFoldrSep      alg@(op,e) sep p =  must_be_non_empties "pFoldrSep" sep   p
-                                   (op <$> p <*> pFoldr    alg sepp `opt` e)
-                                   where sepp = sep *> p
-pFoldrSep_ng ::  (v -> b -> b, b) -> P st a -> P st v -> P st b
-pFoldrSep_ng   alg@(op,e) sep p =  must_be_non_empties "pFoldrSep" sep   p
-                                   (op <$> p <*> pFoldr_ng alg sepp <|>  pure e)
-                                   where sepp = sep *> p
-
-pFoldr1Sep    ::   (a -> b -> b, b) -> P st a1 ->P st a -> P st b
-pFoldr1Sep     alg@(op,e) sep p =  must_be_non_empties "pFoldr1Sep"    sep   p pfm
-                                   where pfm = op <$> p <*> pFoldr    alg (sep *> p)
-pFoldr1Sep_ng ::   (a -> b -> b, b) -> P st a1 ->P st a -> P st b
-pFoldr1Sep_ng  alg@(op,e) sep p =  must_be_non_empties "pFoldr1Sep_ng" sep   p pfm 
-                                   where pfm = op <$> p <*> pFoldr_ng alg (sep *> p)
-
-list_alg :: (a -> [a] -> [a], [a1])
-list_alg = ((:), [])
-
-pList    ::    P st a -> P st [a]
-pList         p =  must_be_non_empty "pList"    p (pFoldr        list_alg   p)
-pList_ng ::    P st a -> P st [a]
-pList_ng      p =  must_be_non_empty "pList_ng" p (pFoldr_ng     list_alg   p)
-
-pList1    ::   P st a -> P st [a]
-pList1         p =  must_be_non_empty "pList"    p (pFoldr1       list_alg   p)
-pList1_ng ::   P st a -> P st [a]
-pList1_ng      p =  must_be_non_empty "pList_ng" p (pFoldr1_ng    list_alg   p)
-
-
-pListSep    :: P st a1 -> P st a -> P st [a]
-pListSep      sep p = must_be_non_empties "pListSep"    sep   p (pFoldrSep     list_alg sep p)
-pListSep_ng :: P st a1 -> P st a -> P st [a]
-pListSep_ng   sep p = must_be_non_empties "pListSep_ng" sep   p pFoldrSep_ng  list_alg sep p
-
-pList1Sep    :: P st a1 -> P st a -> P st [a]
-pList1Sep     s p =  must_be_non_empties "pListSep"    s   p (pFoldr1Sep    list_alg s p)
-pList1Sep_ng :: P st a1 -> P st a -> P st [a]
-pList1Sep_ng  s p =  must_be_non_empties "pListSep_ng" s   p (pFoldr1Sep_ng list_alg s p)
-
-pChainr    :: P st (c -> c -> c) -> P st c -> P st c
-pChainr    op x    =   must_be_non_empties "pChainr"    op   x r where r = x <??> (flip <$> op <*> r)
-pChainr_ng :: P st (c -> c -> c) -> P st c -> P st c
-pChainr_ng op x    =   must_be_non_empties "pChainr_ng" op   x r where r = x <**> ((flip <$> op <*> r)  <|> pure id)
-
-pChainl    :: P st (c -> c -> c) -> P st c -> P st c
-pChainl   op x    =  must_be_non_empties "pChainl"    op   x (f <$> x <*> pList (flip <$> op <*> x)) 
-                    where  f x [] = x
-                           f x (func:rest) = f (func x) rest
-pChainl_ng :: P st (c -> c -> c) -> P st c -> P st c
-pChainl_ng op x    = must_be_non_empties "pChainl_ng" op   x (f <$> x <*> pList_ng (flip <$> op <*> x))
-                     where f x [] = x
-                           f x (func:rest) = f (func x) rest
-
--- | Build a parser for each elemnt in its argument list and tries them all.
-pAny :: (a -> P st a1) -> [a] -> P st a1
-pAny  f l =  foldr (<|>) pFail (map f l)
-
--- | Parses any of the symbols in 'l'.
-pAnySym :: Provides st s s => [s] -> P st s
-pAnySym = pAny pSym 
-
-instance MonadPlus (P st) where
-  mzero = pFail
-  mplus = (<|>)
-
--- * Merging parsers
-
-infixl 3 <||>
-data Freq p =   AtLeast Int     p
-              | AtMost  Int     p
-              | Between Int Int p
-              | One             p
-              | Many            p
-              | Opt             p
-              | Never           p
-
-instance Functor Freq where
-   fmap f (AtLeast n     p)    = AtLeast n   (f p)
-   fmap f (AtMost  n     p)    = AtMost  n   (f p)
-   fmap f (Between  n m  p)    = Between n m (f p)
-   fmap f (One           p)    = One         (f p)
-   fmap f (Many          p)    = Many        (f p)
-   fmap f (Opt           p)    = Opt         (f p)
-   fmap f (Never         p)    = Never       (f p)
-
-canBeEmpty :: Freq t -> Bool
-canBeEmpty (AtLeast _    p)  = False
-canBeEmpty (AtMost  _    p)  = True
-canBeEmpty (Between n m  p)  = if n==0 then error "wrong use of Between" else False -- safety check
-canBeEmpty (One          p)  = False
-canBeEmpty (Many         p)  = True
-canBeEmpty (Opt          p)  = True
-canBeEmpty (Never        p)  = True
-
-split :: [Freq p] -> ([Freq p] -> [Freq p]) -> [(p, [Freq p])]
-split []     _ = []
-split (x:xs) f = oneAlt (x, f xs): split xs (f.(x:))
-                 where oneAlt  (AtLeast 1   p, others)   = (p, Many                p : others)
-                       oneAlt  (AtLeast n   p, others)   = (p, AtLeast  (n-1)      p : others)
-                       oneAlt  (AtMost  1   p, others)   = (p,                         others)
-                       oneAlt  (AtMost  n   p, others)   = (p, AtMost   (n-1)      p : others)
-                       oneAlt  (Between 1 1 p, others)   = (p,                         others)
-                       oneAlt  (Between 1 m p, others)   = (p, AtMost        (m-1) p : others)
-                       oneAlt  (Between n m p, others)   = (p, Between (n-1) (m-1) p : others)
-                       oneAlt  (One         p, others)   = (p,                         others)
-                       oneAlt  (Many        p, others)   = (p, Many                p : others)
-                       oneAlt  (Opt         p, others)   = (p,                         others)
-
-toParser' :: [ Freq (P st (d -> d)) ]  -> P st (d -> d)
-toParser' []      =  pure id
-toParser' alts    =  let palts = [(.) <$> p <*> toParser'  ps  | (p,ps) <- split alts id]
-                     in if and (map canBeEmpty alts) 
-                        then foldr (<|>) (pure id) palts
-                        else foldr1 (<|>) palts
-
-toParser :: [ Freq (P st (d -> d)) ] -> P st d -> P st d
-toParser []    units  =  units
-toParser alts  units  =  let palts = [p <*> toParser  ps units | (p,ps) <- split alts id]
-                         in if and (map canBeEmpty alts) 
-                            then foldr (<-|->) units palts
-                            else foldr1 (<-|->) palts
-
-
-toParserSep :: [Freq (P st (b -> b))] -> P st a -> P st b -> P st b
-toParserSep alts sep  units  =  let palts = [p <*> toParser  (map (fmap (sep *>)) ps) units | (p,ps) <- split alts id]
-                                in if   and (map canBeEmpty alts) 
-                                   then foldr  (<-|->) units palts
-                                   else foldr1 (<-|->) palts
-
-newtype MergeSpec p = MergeSpec p
-
-(<||>) ::  MergeSpec (d,     [Freq (P st (d     -> d)    )],  e -> d     -> g) 
-        -> MergeSpec (i,     [Freq (P st (i     -> i)    )],  g -> i     -> k) 
-        -> MergeSpec ((d,i), [Freq (P st ((d,i) -> (d,i)))],  e -> (d,i) -> k)
-
-MergeSpec (pe, pp, punp) <||> MergeSpec (qe, qp, qunp)
- = MergeSpec ( (pe, qe)
-             , map (fmap (mapFst <$>)) pp ++  map (fmap (mapSnd <$>)) qp
-             , \f (x, y) -> qunp (punp f x) y
-             )
-
-pSem :: t -> MergeSpec (t1, t2, t -> t3 -> t4)
-          -> MergeSpec (t1, t2, (t4 -> t5) -> t3 -> t5)
-f `pSem` MergeSpec (units, alts, unp) = MergeSpec  (units, alts, \ g arg -> g ( unp f arg))
-
-pMerge ::  c -> MergeSpec (d, [Freq (P st (d -> d))], c -> d -> e) -> P st e
-sem `pMerge` MergeSpec (units, alts, unp) =  unp sem <$> toParser alts (pure units)
-
-pMergeSep ::  (c, P st a)  -> MergeSpec (d, [Freq (P st (d -> d))], c -> d -> e) -> P st e
-(sem, sep) `pMergeSep` MergeSpec (units, alts, unp) =  unp sem <$> toParserSep alts sep (pure units)
-
-pBetween :: Int -> Int -> P t t1 -> MergeSpec ([a], [Freq (P t ([t1] -> [t1]))], a1 -> a1)
-pBetween  n m p = must_be_non_empty "pOpt"  p 
-                 (if m <n || m <= 0 then         (MergeSpec ([]       ,[                           ], id)) 
-                  else if n==0 then              (MergeSpec ([]       ,[AtMost  m     ((:)   <$> p)], id)) 
-                  else                           (MergeSpec ([]       ,[Between n m   ((:)   <$> p)], id)))
-
-pAtMost :: Int -> P t t1 -> MergeSpec ([a], [Freq (P t ([t1] -> [t1]))], a1 -> a1)
-pAtMost   n   p = must_be_non_empty "pOpt"  p
-                 (if n <= 0         then         (MergeSpec ([]       ,[                           ], id))
-                                    else         (MergeSpec ([]       ,[AtMost  n     ((:)   <$> p)], id)))
-
-pAtLeast :: Int -> P t t1 -> MergeSpec ([a], [Freq (P t ([t1] -> [t1]))], a1 -> a1)
-pAtLeast  n   p = must_be_non_empty "pOpt"  p
-                 (if n <= 0         then         (MergeSpec ([]       ,[Many          ((:)   <$> p)], id))
-                                    else         (MergeSpec ([]       ,[AtLeast n     ((:)   <$> p)], id)))
-
-pMany :: P t t1 -> MergeSpec ([a], [Freq (P t ([t1] -> [t1]))], a1 -> a1)
-pMany p        = must_be_non_empty "pMany" p     (MergeSpec ([]       ,[Many          ((:)   <$> p)], id))
-
-pOpt :: P t t1 -> t11 -> MergeSpec (t11, [Freq (P t (b -> t1))], a -> a)
-pOpt  p v      = must_be_non_empty "pOpt"  p     (MergeSpec (v        ,[Opt           (const <$> p)], id))
-
-pSome :: P t t1 -> MergeSpec ([a], [Freq (P t ([t1] -> [t1]))], a1 -> a1)
-pSome p        = must_be_non_empty "pSome" p     (MergeSpec ([]       ,[AtLeast 1     ((:)   <$> p)], id))
-
-pOne :: P t t1 -> MergeSpec (a, [Freq (P t (b -> t1))], a1 -> a1)
-pOne  p        = must_be_non_empty "pOne"  p     (MergeSpec (undefined,[One           (const <$> p)], id))
-
-mapFst :: (t -> t2) -> (t, t1) -> (t2, t1)
-mapFst f (a, b) = (f a, b)
-
-mapSnd :: (t1 -> t2) -> (t, t1) -> (t, t2)
-mapSnd f (a, b) = (a, f b)
-
diff --git a/Text/ParserCombinators/UU/Parsing.hs b/Text/ParserCombinators/UU/Parsing.hs
deleted file mode 100644
--- a/Text/ParserCombinators/UU/Parsing.hs
+++ /dev/null
@@ -1,5 +0,0 @@
-module Text.ParserCombinators.UU.Parsing  {-# DEPRECATED "Use Text.ParserCombinators.UU instead" #-}
-        ( module Text.ParserCombinators.UU.Core
-        , module Text.ParserCombinators.UU.Derived) where
-import Text.ParserCombinators.UU.Core
-import Text.ParserCombinators.UU.Derived
diff --git a/src/Main.hs b/src/Main.hs
new file mode 100644
--- /dev/null
+++ b/src/Main.hs
@@ -0,0 +1,247 @@
+{-# OPTIONS_GHC -Wall #-}
+
+module Main where
+
+-- Libs
+import System.Console.ParseArgs hiding (args) -- cabal install parseargs
+import System.FilePath
+import System.IO
+import Data.Maybe (isJust, fromJust)
+import Data.Binary
+
+-- Music stuff
+import HarmTrace.HarmTrace
+import HarmTrace.Base.MusicRep
+import HarmTrace.IO.Main
+import HarmTrace.IO.Errors
+import HarmTrace.Matching.GuptaNishimuraEditMatch
+import HarmTrace.Matching.Standard
+import HarmTrace.Matching.Matching
+import HarmTrace.IO.PrintTree
+import HarmTrace.HAnTree.Tree (Tree)
+import HarmTrace.HAnTree.HAn
+import HarmTrace.Matching.Sim (selfSim)
+
+-- Parallelism
+import Control.Parallel.Strategies
+
+--------------------------------------------------------------------------------
+-- Command-line arguments
+--------------------------------------------------------------------------------
+
+data MyArgs = SourceInputString | SourceInputFile | TargetInputFile 
+            | InputDir | OpMode | Print | MaxErrorRate | BinaryOut | BinaryIn
+  deriving (Eq, Ord, Show)
+
+myArgs :: [Arg MyArgs]
+myArgs = [
+          Arg { argIndex = MaxErrorRate,
+                argAbbr  = Just 'e',
+                argName  = Just "max-error",
+                argData  = argDataOptional "float" ArgtypeFloat,
+                argDesc  = "Ignore pieces with higher error rate for diff"
+              },
+          Arg { argIndex = SourceInputString,
+                argAbbr  = Just 'c',
+                argName  = Just "chords",
+                argData  = argDataOptional "string" ArgtypeString,
+                argDesc  = "Input Chord Sequence to parse"
+              },
+          Arg { argIndex = SourceInputFile,
+                argAbbr  = Just '1',
+                argName  = Just "sfile",
+                argData  = argDataOptional "filepath" ArgtypeString,
+                argDesc  = "Input file (source for diff)"
+              },
+          Arg { argIndex = TargetInputFile,
+                argAbbr  = Just '2',
+                argName  = Just "tfile",
+                argData  = argDataOptional "filepath" ArgtypeString,
+                argDesc  = "Input file (target for diff)"
+              },
+          Arg { argIndex = InputDir,
+                argAbbr  = Just 'd',
+                argName  = Just "dir",
+                argData  = argDataOptional "directory" ArgtypeString,
+                argDesc  = "Input directory (to process all files within)"
+              },            
+          Arg { argIndex = OpMode,
+                argAbbr  = Just 'm',
+                argName  = Just "mode",
+                argData  = argDataRequired "parse|stdiff|lces|bpm" 
+                           ArgtypeString,
+                argDesc  = "One of \"parse\", \"lces\", \"stdiff\", "++
+                           "or \"bpm\""
+              },
+          Arg { argIndex = Print,
+                argAbbr  = Just 'p',
+                argName  = Just "print",
+                argData  = Nothing,
+                argDesc  = "Set this flag to generate a .png for an input file"
+              },
+          Arg { argIndex = BinaryOut,
+                argAbbr  = Just 'o',
+                argName  = Just "out",
+                argData  = argDataOptional "filepath" ArgtypeString,
+                argDesc  = "Output binary file for parsing results"
+              },
+          Arg { argIndex = BinaryIn,
+                argAbbr  = Just 'i',
+                argName  = Just "in",
+                argData  = argDataOptional "filepath" ArgtypeString,
+                argDesc  = "Input binary file for matching"
+              }
+         ]
+
+--------------------------------------------------------------------------------
+-- Main
+--------------------------------------------------------------------------------
+
+
+data MatchMode = STDiff | LCES | BPMatch
+  deriving (Eq, Ord, Show)
+
+err1, err2, err3 :: String
+err1 = "Use a source file, or a directory."
+err2 = "Use a source file and a target file, or a directory."
+err3 = "Use a source file and optionally a target file."
+
+main :: IO ()
+main = do args <- parseArgsIO ArgsComplete myArgs
+          let mode      = getRequiredArg args OpMode
+              prnt      = gotArg args Print
+          case mode of
+            "parse"  -> mainParse  prnt
+            "stdiff" -> mainMatch  False STDiff
+            "bpm"    -> mainMatch  prnt  BPMatch
+            "lces"   -> mainMatch  prnt  LCES
+            s        -> usageError args ("Unknown mode: " ++ s)
+
+mainParse :: Bool -> IO ()
+mainParse p = do args <- parseArgsIO ArgsComplete myArgs
+                 let cStr = getArgString args SourceInputString
+                     mf1  = getArgString args SourceInputFile
+                     mf2  = getArgString args TargetInputFile
+                     bOut = getArgString args BinaryOut
+                     mdir = getArgString args InputDir
+                 case (cStr, mf1,mf2,mdir, p) of
+                   -- parse a string of chords
+                   (Just c, Nothing, Nothing, Nothing , False)  ->
+                     parseTree c >> return ()
+                   (Just c, Nothing, Nothing, Nothing , True)   ->
+                     do ts <- parseTree c 
+                        printTreeHAnF ts (trimFilename c) >> return ()
+                   -- Parse one file, show full output
+                   (Nothing, Just f1, Nothing, Nothing , False) -> 
+                     do ts  <- readFile f1 >>= parseTreeVerb
+                        mapM_ print ts
+                   (Nothing, Just f1, Nothing, Nothing , True ) ->
+                   --with post processing
+                     do ts <- readFile f1 >>= parseTree 
+                        printTreeHAnF ts f1 >> return () 
+                   -- Parse all files in one dir, show condensed output 
+                   (Nothing, Nothing, Nothing, Just dir, False) ->
+                     parseDir dir bOut
+                   _ -> usageError args err1        
+                   
+trimFilename :: String -> String
+trimFilename = filter (\x -> not (elem x ":*")) . concat . words . take 20 
+                   
+mainMatch :: Bool -> MatchMode -> IO ()
+mainMatch p m =
+     do args <- parseArgsIO ArgsComplete myArgs
+        let cStr  = getArgString args SourceInputString
+            mf1   = getArg args SourceInputFile
+            mf2   = getArg args TargetInputFile
+            mdir  = getArg args InputDir
+            bIn   = getArgString args BinaryIn
+            me    = getArg args MaxErrorRate
+        case (cStr,mf1,mf2,mdir,p) of
+          -- Parse source and target file, show full output
+          (_,Just f1, Just f2, Nothing, prnt)   -> 
+            do c1 <- readFile' f1
+               c2 <- readFile' f2
+               matchFiles m prnt c1 c2 f1 f2
+          (Just c, Just f1, Nothing, Nothing, True) ->
+            matchFiles m True c f1 (trimFilename c) (trimFilename f1)
+          -- match all files in one dir, show condensed output
+          (_,Nothing, Nothing, Just dir, False) -> testDirMatch bIn m me dir 
+          _                                     -> usageError args err2
+
+printSelfSims :: Tree HAn -> Tree HAn -> IO()
+printSelfSims a b = putStrLn (str a ++ str b) where
+  str x = "self similarity" ++ (show $ selfSim x)
+
+matchFiles :: MatchMode -> Bool -> String -> String -> String -> String -> IO ()
+matchFiles m prnt f1 f2 _n1 _n2 = 
+  let (toks1, _, ts1, te1, pe1) = string2PieceCPostProc f1
+      (toks2, _, ts2, te2, pe2) = string2PieceCPostProc f2
+  in
+  do  if not $ null te1 then showErrors "tokenizer 1: " te1 else putStr ""
+      if not $ null te2 then showErrors "tokenizer 2: " te2 else putStr ""
+      if not $ null pe1 then showErrors "parser 1: " pe1 else putStr ""
+      if not $ null pe2 then showErrors "parser 2: " pe2 else putStr ""
+      case (m,prnt) of
+        (STDiff,_)   -> print (diffChordsLen toks1 toks2)
+        (BPMatch,True)  -> printBPM 2 (head ts1) (head ts2)
+        (BPMatch,False) -> error "Unimplemented." -- putStrLn ( "score: "  ++ show (getMatch 2 ts1 ts2))
+        (LCES,False) -> do
+          printSelfSims (head ts1) (head ts2)
+          putStrLn ("1vs2\n" ++show lcesab ++ "\nscore: " ++ show scoreab)
+          putStrLn ("2vs1\n" ++show lcesba ++ "\nscore: " ++ show scoreba) 
+          putStrLn ("self Simlarity 1: " ++ (show . selfSim $ head ts1))
+          putStrLn ("self Simlarity 2: " ++ (show . selfSim $ head ts2)) where
+                      (lcesab,lcesba,scoreab,scoreba) = matchTwo (head ts1) (head ts2)
+        (LCES,True)  -> do  
+       {-   printTreeHAnF (show ts1) ( n1 <.> "png")  >> return ()
+          printTreeHAnF (show ts2) ( n2 <.> "png")  >> return ()
+          printTreeHAn (show lcesab) ("match1vs2" <.> "png") 
+               >> return ()
+          printTreeHAn (show lcesba) ("match2vs1" <.> "png") 
+               >> return ()
+          printSelfSims ts1 ts2 -}
+          putStrLn ("refactor me");
+                
+matchTwo :: Tree HAn -> Tree HAn -> ([Tree HAn], [Tree HAn], Float, Float)
+matchTwo ta tb = (lcesab,lcesba,scoreab,scoreba) where                
+  (lcesab, scoreab)  = getWeightLCES ta tb
+  (lcesba, scoreba)  = getWeightLCES tb ta
+
+-- filters the songs that have multiple versions and can be used as query
+filterNonQuery :: [FilePath] -> [FilePath]                       
+filterNonQuery = concatMap snd . filter ((>1) . length . snd) . getClassSizes
+
+-- matches a directory of chord description files
+testDirMatch :: Maybe FilePath -> MatchMode -> Maybe Float -> FilePath -> IO ()
+testDirMatch bIn m me fp = 
+  do fs <- readDataDir fp
+     let process s   = let (tks, _, ts, _, e2) = string2PieceCPostProc s
+                       in  (tks, head ts, errorRatio e2 tks)
+         filterError = if isJust me 
+                          then filter (\(_,_,e) -> e <= fromJust me) else id
+     pss <- mapM (\f -> readFile' (fp </> f)) fs
+     (tks, ps) <- case bIn of
+                    Just bp -> decodeFile bp :: IO ([[ChordLabel]],[Tree HAn])
+                    Nothing -> let (toks, ps', _) = unzip3 (filterError 
+                                                             (map process pss))
+                               in return (toks, ps' `using` parList rdeepseq)
+     let fsq = filterNonQuery fs
+     putStr "true\n"
+     if (m == LCES || m == BPMatch) then putStr "false\n" else putStr "true\n"
+     mapM_ (putStr . (++ "\t")) fsq
+     putChar '\n'
+     mapM_ (putStr . (++ "\t"). getId) fs
+     putStrLn ""
+     let match sim l  = [ [ sim x y | y <- l ]
+                        | (x,i) <- zip l (map getId fs), i `elem` fsq ]
+         printLine l  = putStrLn (foldr (\a b -> showFloat a ++ "\t" ++ b) "" l)
+                         >> hFlush stdout
+     let r = (case m of
+                STDiff -> match diffChordsLen tks
+                LCES   -> match getSimLCES ps
+                BPMatch -> match (getMatch 2) ps)
+             -- we could use nr-of-cores threads to pars nr-of-cores chunks...
+             -- `using` parListChunk numCapabilities rdeepseq
+             -- ... but this is just faster 
+             `using` parList rdeepseq
+     sequence_ [ printLine x | x <- r]
