I downloaded the latest version today, see I tried with a vocal take, me speaking, I thought if I turn the left slider all the way up you get that cher/daft punk effect, but instead it sounds like some kind of chorus, MIDI works fine thought.Did you download the latest beta? I fixed the speed control a few betas ago. It should be able to go pretty smooth now.
Anyways, I'll try with some melodic vocal take to see what happens.
