MIDI

From HaskellWiki

MIDI is a system for control of digital music instruments. The MIDI standard also defines a file format to store such control data. MIDI treats music as a sequence of notes. Audio signal processing is not its purpose.

Package midi
Hackage http://hackage.haskell.org/package/midi
Repository darcs get http://code.haskell.org/~thielema/midi/