Very cool. I can see how this really would make it a lot easier to learn chords and chord progressions.

Actually, this is probably a great 'prototyping' app, too. I'm not sure I'd use this app directly in a track, but I could see myself toying around with this until I got something that sounded interesting, and then jumping over to a real synth to record.

Anyway, very nice! Congrats on the launch!