Great idea and very polished feel, with good percussion soundtrack. The puzzles are pretty fiendish and I only managed to succeed at a few of them, so actually being able to retry a lot of times and the cheat was a handy way for me to see more of the game rather than get frustrated and score poorly (see what you did there!). Maybe a little more fanfare if you do complete a level would be nice, as they are tricky to do it would be nice to feel achievement.