diff --git a/Main.hs b/Main.hs
--- a/Main.hs
+++ b/Main.hs
@@ -33,7 +33,7 @@
   putStrLn ""
   putStrLn "Instrument parts:"
   putStr showCharPartMap
-  putStrLn "For sheet music, GRB are tab instead of notation."
+  putStrLn "For sheet music, GRBA are tab instead of notation."
   putStrLn "For audio, GBDKV are the backing tracks for each instrument."
   putStrLn ""
   putStrLn "Example usage:"
@@ -309,7 +309,8 @@
 partToChar p = case p of
   PartGuitar1 -> 'g'
   PartGuitar2 -> 'r'
-  PartBass    -> 'b'
+  PartBass1   -> 'b'
+  PartBass2   -> 'a'
   PartDrums1  -> 'd'
   PartDrums2  -> 'm'
   PartKeys1   -> 'k'
diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -74,7 +74,8 @@
 
     g - Guitar (1)
     r - Guitar 2
-    b - Bass
+    b - Bass (1)
+    a - Bass 2
     d - Drums (1)
     m - Drums 2
     k - Keyboard (1)
@@ -84,7 +85,7 @@
     o - Organ
     v - Vocals (Lead)
     x - Vocals (Backing)
-    GRB - in sheet music, tab instead of notation
+    GRBA - in sheet music, tab instead of notation
     GBDKV - in audio, the backing track for an instrument
 
 So, for example, to make a backing track consisting of just drums and bass:
@@ -105,7 +106,7 @@
 mix them together.
 
 Let's say you own all 5 instruments for a song. You can access the "hidden"
-track with the following command:
+track with a command similar to the following:
 
     jammittools <search parameters> -a out.wav -y D -n grbkyvx
 
diff --git a/jammittools.cabal b/jammittools.cabal
--- a/jammittools.cabal
+++ b/jammittools.cabal
@@ -1,5 +1,5 @@
 Name:               jammittools
-Version:            0.5.2
+Version:            0.5.3
 Synopsis:           Export sheet music and audio from Windows/Mac app Jammit
 Description:
 
@@ -36,17 +36,17 @@
     base            >= 4.6.0.1   && < 5
     , xml           >= 1.3.14    && < 1.4
     , text          >= 1.2.1.1   && < 1.3
-    , directory     >= 1.2.0.1   && < 1.3
+    , directory     >= 1.2.0.1   && < 1.4
     , filepath      >= 1.3.0.1   && < 1.5
     , containers    >= 0.5.0.0   && < 0.6
-    , process       >= 1.1.0.2   && < 1.5
+    , process       >= 1.1.0.2   && < 1.6
     , temporary     >= 1.1.2.5   && < 1.3
     , transformers  >= 0.3.0.0   && < 0.6
     , JuicyPixels   >= 3.2.7     && < 3.3
     , HPDF          >= 1.4.9     && < 1.5
     , bytestring    >= 0.10.4.0  && < 0.11
     , conduit       >= 1.2.3.1   && < 1.3
-    , vector        >= 0.10.12.2 && < 0.12
+    , vector        >= 0.10.12.2 && < 0.13
     , conduit-audio >= 0.1       && < 0.3
     , resourcet     >= 1.1.7.2   && < 1.2
   ghc-options:      -Wall -O2
@@ -58,10 +58,10 @@
     Paths_jammittools
   build-depends:
     base            >= 4.6.0.1 && < 5
-    , directory     >= 1.2.0.1 && < 1.3
+    , directory     >= 1.2.0.1 && < 1.4
     , filepath      >= 1.3.0.1 && < 1.5
     , boxes         >= 0.1.3   && < 0.2
-    , jammittools   == 0.5.2
+    , jammittools   == 0.5.3
   ghc-options:      -Wall -O2
 
 source-repository head
diff --git a/src/Sound/Jammit/Base.hs b/src/Sound/Jammit/Base.hs
--- a/src/Sound/Jammit/Base.hs
+++ b/src/Sound/Jammit/Base.hs
@@ -53,7 +53,8 @@
 data Part
   = PartGuitar1 -- ^ Used for both Guitar and Guitar 1
   | PartGuitar2
-  | PartBass
+  | PartBass1 -- ^ Used for both Bass and Bass 1
+  | PartBass2 -- ^ Rarely used. Seen in \"The Fish (Schindleria Praematurus)\", \"I've Seen All Good People\", \"Perpetual Change\"
   | PartDrums1 -- ^ Used for both Drums and Drums 1
   | PartDrums2 -- ^ Rarely used. Seen in \"Space Truckin\'\"
   | PartKeys1 -- ^ Used for both Keys and Keys 1
@@ -80,7 +81,9 @@
   "Guitar"   -> Just PartGuitar1
   "Guitar 1" -> Just PartGuitar1
   "Guitar 2" -> Just PartGuitar2
-  "Bass"     -> Just PartBass
+  "Bass"     -> Just PartBass1
+  "Bass 1"   -> Just PartBass1
+  "Bass 2"   -> Just PartBass2
   "Drums"    -> Just PartDrums1
   "Drums 1"  -> Just PartDrums1
   "Drums 2"  -> Just PartDrums2
@@ -91,7 +94,10 @@
   "Synth"    -> Just PartSynth
   "Organ"    -> Just PartOrgan
   "Vocal"    -> Just PartVocal
+  "Vocal 1"  -> Just PartVocal -- I've Seen All Good People
+  "Vocals"   -> Just PartVocal -- South Side of the Sky
   "B Vocals" -> Just PartBVocals
+  "Vocal 2"  -> Just PartBVocals -- I've Seen All Good People
   _          -> Nothing
 
 titleToAudioPart :: String -> Instrument -> Maybe AudioPart
@@ -102,7 +108,8 @@
 partToInstrument p = case p of
   PartGuitar1 -> Guitar
   PartGuitar2 -> Guitar
-  PartBass    -> Bass
+  PartBass1   -> Bass
+  PartBass2   -> Bass
   PartDrums1  -> Drums
   PartDrums2  -> Drums
   PartKeys1   -> Keyboard