Please make the buttons very small as in this example
It's a lot of fun playing with your finger on the iPad
Lol, my fingers barely fit on my bass guitar
@Niko if you want small keys, you could consider a midi AUv3 effect. I have Velocity Keyboard, and it lets me choose a keyboard or a string layout, but it in keyboard mode it also lets me get a ridiculous 7 octave on the screen... Unusable like that for me, because of my big fingers!
simply give people the opportunity to decide for themselves