Issue 1548 in lilypond: midi output should map voices to channels

[lilypond]

Status: Accepted
Owner: jan.nieuwenhuizen
Labels: Type-Defect

New issue 1548 by jan.nieuwenhuizen: midi output should map voices to  
channels
http://code.google.com/p/lilypond/issues/detail?id=1548

lilypond merges all voices in one staff into one channel.
staffs are mapped to tracks and channels like this:

   control -> track 0 channel 0
   staff 1 -> track 1 channel 1
   staff 2 -> track 2 channel 2

midi2ly tries to unmerge/unthread voices from a channel,
which mostly fails for a part.

when voices are mapped to channels, midi2ly can recreate
the original input.