I wish I could put together a decent demo of this - I just can't find the right material to show it off.
I had an idea to turn the OT into a harmoniser. I assigned a Flex machine to the first three tracks and set them all to RECORDER1. Then I set the PTCH of Track 2 to +3.0 and PTCH of Track 3 to +7.0
Place a couple of simultaneous playback triggers on all three tracks (i.e. same trig positions)
Then go into the Record setup for Track 1. Assign the correct input and a length of, say, 16. Add a one-shot record trig to the first step.
Feed something into the OT while it's playing and then hold T1 and press ENTER/YES to record. You'll get a minor chord of whatever you put into the input. Instant harmoniser!
I then Scene-locked the PTCH of Track 2 to go from 3 (left) to 5 (right) and Track 3 from 7 (left) to 10 (right). Then as you're playing you can swipe the x-fader from left to right to get variation on the chord - left 0, 3, 7 and right 0, 5 10
Remember you can hold down T1 and ENTER/YES and the one-shot recorder will be constantly armed. Let go when you've got something good.