In my Live set up , I use reaper for playback of backing tracks.
I send midi to a seperate live GP keyboard rig PC via midi in ( roland UM-1 interface ).
So to the point, I have reaper sending out program changes ( on my laptop ) for each of the < A, B, C, D > patches for each song. automated. and it sends to the GP midi IN computer.
This works great when automated. The patches change during the song and i just play the keyboards.
Thing is, I also want to have a manual way of using a 4 way button selector , A B C D (for midi selecting the patches within a GP songlist ) from my alesis keyboard , ( for songs we dont use bacing tracks with ) .
How can I have assigned, 2 independant midi sources to each of the A B C D song patches that are going into my GP Live PC keyboard machine , as to select the A B C D patches manual and automated ??