I've been racking my brains on this one. What I want to do is play a chord on the keyboard and have a sequencer play the "gate" time or the on/off of the chord so I can do repetitive complex rhythms on the chord by just holding down the notes rather than sequencing, and then as i play different chords they will still play triggered from this gate. Kind of like an "auto accompaniment" you used to find on home keyboards.
In my mind i was wondering if there was a way of filtering out the on/off information from the chord when played and merging this with on/off information from a different source (ie a sequencer playing the gate or on/off time). Any ideas if this is achievable?