Can you use Alt+2 to mute all and then you can play the live drum/bass solo then Alt+2 to bring the BB instruments back.
MIDI HotKey Portable will send HotKeys from your MIDI Keyboard
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=507168#Post507168

EDIT: not sure if you mean the drums and bass are live playing or BB,
if it's BB you can mute the others, MIDI HotKey might send multiple ?
if not AutoHotKey will.

Muting Parts

Alt+2
Mutes all tracks

Alt+3
Mutes the Bass track

Alt+4
Mutes the Piano track

Alt+5
Mutes the Drums track

Alt+6
Mutes the Guitar track

Alt+7
Mutes the Strings track

Alt+8
Mutes the Melody track

Alt+9
Mutes the Soloist track

Alt+0
Mutes the Thru track

Last edited by Pipeline; 01/30/19 07:53 PM.
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