Some certain few MIDI synth or sampler solutions will allow for assigning channels other than 10 (or sometimes 16) as Percussion tracks, but most will not.

The Percussion Bank, as per the General MIDI specification, is only really available on one of those two channels.

You might split each Instrument Patch by part into being on separate Tracks within your software sequencer program, but the problem is that they will all still be on that one MIDI CHANNEL and changing the Volume cc7 command for any one Track will raise or lower the volume of all others at the same time.

Don't confuse MIDI "channels" with being the same thing as "tracks".

The workaround is to indeed split them out into Tracks, but then Solo each track in turn and convert that track to a separate AUDIO track first.

Then you can Mute the original MIDI Percussion tracks and use the Audio Volume command to change each separate sound.


--Mac