Drum patterns and MIDI

[Torquil Macdonald Sørensen]

Hi!

Finally I have managed to use Lilypond for two-voice drum patterns. I found out 
how to define short twozvoice patterns that I can place in any order I like, as 
in the attached file. However, when structuring my Lilypond files like this, I 
get no midi output...

If someone could please have a quick look at the attached Lilypond file to see 
what I have done wrong, I would be very grateful. The PDF output looks fine, but 
the MIDI file seems to be empty.

I have structured my file differently than the drum examples I have found 
online, because defining the patterns like I have done is much more convenient 
than to make separate definitions of upper and lower voices that are to appear 
on the same staff.

If I could only get a non-empty MIDI file from this, it would be wonderful...

Best regards
Torquil Sørensen

drums.ly
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