Clean and intuitive.
It's not easy matching animation to music in Flash, but you pulled it off very nicely. As a game, I really didn't feel like it offered much, though. I'm not shitting on what you've done here- I understand the commitment it takes to make a game, and as far as rhythm games goes, this is right up to par. But the genre really needs to get taken to the next level- and three quick levels of moving the cursor up and down just didn't do it. I do think that it's an exemplary rhythm game. I just don't know if that's what game designers should be shooting for. All in all, I think you've got obvious talent and dedication. If you had more time to commit to a project like this, I think you could have turned a solid start into an awesome game.