The idea is great, but first off, we need a record option. The ability to add in the apps other features, more keyboard settings (being an avid piano player the time it takes to make a proper noise is unacceptable.) more drum settings, and more sounds in general. The potential is there, but as is I wouldnt waste my money. Again.
Celestrial16 about DUBSTEP / Loops / Keyboard / Drums, v1.1