Quote:

Yes, isn't it true all imported midi tracks are on the Melody channel


Yes. ("Track" not "channel.") Try this: Fire up BB, File Open => open the midi file. (Do not be fooled by all those chords in the chord grid. No midi data have yet been generated by BB. The data in the underlying sequencer are all from the midi file.) Click on the Seq button. Choose the melody track. You should see a row for each channel for which there are data - including the number of events in each channel. Do you see channel 10? If not, and you know there are channel 10 data in the original file, that's a puzzlement of the highest order, deserving of a priority call to British Columbia.

Quote:

However, this doesn't answer why the drum track was not audible, which does not relieve me of all problems.


Could be simple explanation, like the sound source Ch. 10 volume went to zero, etc. (Could be a rogue controller event in the midi file?) First make sure the data are really there.

-Ron