This was awesome! At first I had no idea what to do, but luckily there's a hint button. I really liked 7, 2 and 1. I didn't liked 5.

Here are some suggestions:

- I would suggest to do some very easy intro levels at first so put in the mood of the game.

- Sometimes the piano sounded glitchy.

- Clock didn't reset when I pressed the button "Try again".

- Add support for number pad.

Can't wait for the next version!