Cool little tutorial by Automatic Gainsay on programming a minor chord on the Voyager, and using the mod wheel to switch to major chord.
I was about to say “I used this trick before the vid was brodcast” but then saw the date haha. Anyway, I gathered in a set three little performances where I use a similar trick. Actually having only two oscillators singing most of the time, I use the modwhell to modulate the interval between them from a minor third to a major one. Instead of having a full perfect chord, I play mmelodies or arpeggios with osc 1 being the fondamental and osc 2 the third, or osc1 being the third and osc 2 the fifth, or osc 1 the fifth and osc 2 the seventh, each time major or minor.
You can listen to that here.