This was pretty alright. Nice clean style. A little more visual feedback would be nice; I couldn't tell if a block breaking was a good or a bad thing at first. Maybe the score counter could show your last score rather than the high score. Otherwise there's no way to tell how well you did if you didn't beat your last high score. I didn't notice any difference between selecting 1 and 2 music notes, so I'm guessing that's the map select that wasn't implemented.
Either my timing is really bad or the game was dropping my inputs, or possibly a combination thereof, but I was missing a lot. This is a very tough level for a beginner. Like Mando said, the best strategy seems to be just mashing all 4 buttons at once. Not bad for the time frame. I like the song, though it's (mercifully for the level) a little short.