I love it! The feel of the gameplay and how fast everything controls is great. The presentation is nice too, I like the visuals. The theme is also implemented very well. Adding a button to zoom the camera out a little would have been nice. Obviously as you said some music and sound effects too and also some kind of score system to keep track of how well you did in a try and keep improving (ideally with an online leaderboard, but of course there was little time for it.
Good job overall :)