> EVB3 is multitimbral (upper keyboard + lower keyboard + bass > pedals like a real organ), thus the MIDI channel of the > AudioInstrument track is relevant. > > MIDI Channels 4-16 play nothing. So you have to change the midi channel of the instruments higher than 3, the default midi channel follows the instrument number (instrument 5 has midi channel 5 etc). It's very simple, just select the instrument in arrange and change the midi channel in the info box.