Hi Chony,
I did actually test it, before suggesting it,( in omb.) I just created 3 drum tracks one, with bass drum, 1 with hihat & 1 with cymbals . Then set 1 track to play on maj, another min another on 7th. I wanted to make sure that they were triggering independantly, depending on the chord type.

Probably gets too complicated if you try and do variations for a lot of instruments, but you could just create drum variations for maj, min & 7ths.

Personally I haven't got the musical skill to come up with additional style tracks, I'm more into editing existing.


best wishes
Rikki