I use Music Studio with 2 MIDI keyboards, set to channels 1 and 2. With MIDI Channels set to TRACKS, I can play two instruments with no problem. But, if I hold a note on one keyboard and strike the same note on the other keyboard, it doesn’t sound on the second instrument. Striking the note simultaneously on both keyboards works, as do any other notes. It seems like holding a note on MIDI channel 1 blocks that note from sounding on channel 2. Have I missed a Setting which would fix this, or is it a bug in the MIDI implementation? By the way, this works fine on the 2-row screen keyboard.
Thank you for reporting this bug! I can reproduce it, we’ll try to fix it in one of the next updates.