Someone please clarify:
1) To access the new sounds/styles from this program, do you need external hardware?
2) I see a tablet in one picture. Do you make all you selections on the tablet, and never touch the keyboards buttons? Seems awkward, if that's the case.
3) Is the Groovy program playing itself, or the internal sounds of the Yamaha host? What do you hook up to audio amps?

I've passed over most of these Groovy related posts because I don't think this is something I want, or need, but I'd like to know a bit more, just to stay informed.