Failed your harmony exam? No matter. Grab Zarlyno, a chord block for paraphonic synthesis by E.M.
Four multimode oscillators play just-tempered chords, conveniently picked with the very rotation a couple of knobs.
Voices don't overlap and can glide polyphonically.
Separate outs are provided for the 4 oscillators.
Or you might just hack your way in and extract the pitch signals, in order to fuel your own synth...