So I installed the app then found myself addicted to spending my commute on the train trying to come up with something. (Aside - just tested the WIndows version using dropbox to sync the files... awesome!)
I started with the idea for a slow beat and a wow-wow-wow type noise and it kind of went from there. I added some sort of chord arpeggio melody then decided it needed a bridge before building up again for the finale.
You will soon be able to tell that I'm in no way a musician, still it was fun :)
Anyway, hope you enjoy