diff --git a/src/Csound.hs b/src/Csound.hs
--- a/src/Csound.hs
+++ b/src/Csound.hs
@@ -11,21 +11,21 @@
 --
 -- * 'Temporal.Music.Score.temp' -- makes a score of one note that lasts for one second.    
 --
--- * 'Temporal.Music.Score.line' -- plays a list of notes in sequence (one after the other).
+-- * 'Temporal.Music.Score.mel' -- plays a list of notes in sequence (one after the other, short for @melody@).
 -- 
--- * 'Temporal.Music.Score.chord' -- plays a list of notes in parallel (at the same time).
+-- * 'Temporal.Music.Score.har' -- plays a list of notes in parallel (at the same time, short for @harmony@).
 --
--- * 'Temporal.Music.Score.delay' -- delays all notes for some time.
+-- * 'Temporal.Music.Score.del' -- delays all notes for some time (short for @delay@).
 --
--- * 'Temporal.Music.Score.stretch' -- change the tempo for all notes by the given ratio.
+-- * 'Temporal.Music.Score.str' -- change the tempo for all notes by the given ratio (short for @stretch@).
 --
 -- Let's play something:
 --
--- > res = stretch 0.5 $ line [ temp a, stretch 2 $ temp b, rest 1, chord [temp a, temp b] ]
+-- > res = str 0.5 $ mel [ temp a, str 2 $ temp b, rest 1, har [temp a, temp b] ]
 --
 -- There are two handy infix operators for delay and stretch: @(+|)@ and @(*|)@. So we can write the previous score:
 --
--- > res = 0.5 *| line [ temp a, 2 *| temp b, 1 +| chord [temp a, temp b] ]
+-- > res = 0.5 *| mel [ temp a, 2 *| temp b, 1 +| har [temp a, temp b] ]
 module Csound (
     {-
     -- * Converters
diff --git a/temporal-csound.cabal b/temporal-csound.cabal
--- a/temporal-csound.cabal
+++ b/temporal-csound.cabal
@@ -2,7 +2,7 @@
 -- documentation, see http://haskell.org/cabal/users-guide/
 
 name:                temporal-csound
-version:             0.2.0
+version:             0.2.1
 synopsis:            brings together temporal-music-notation and csound-expression packages
 -- description:         
 license:             BSD3
@@ -29,4 +29,4 @@
   exposed-modules:     
     Csound
   -- other-modules:       
-  build-depends:       base >= 4, base < 5, temporal-music-notation>=0.4, csound-expression>=3.0.0 , temporal-media >= 0.4
+  build-depends:       base >= 4, base < 5, temporal-music-notation>=0.4, csound-expression>=3.1.0 , temporal-media >= 0.4