Thanks for your kind review. The whole thing is very unfinished, I only just managed to put together a stable version in the last two hours. Beginning dev with a full time job so I'm not unhappy with what I managed to throw together. Sound effects were going to be the next thing on the list :)
My mission for this game was to sneak in a learning element about music notation and ear training. In sheet music, though slightly more elaborate, you essentially note music like this; stacking instruments one bar at a time.