Interesting story line, Awesome Visuals.
This game was overall pretty great, despite how much I lost at it. I think the main factor is how the Music and the Monsters were SLIGHTLY out of sync with each other (and being a musician myself, this made the game a lot harder for me- seeing as playing right on beat would sometimes not work). So, it's a good thing that the monsters were as sensitive as they were and didn't require maximum-precision in order to get some points.
The sound track for the game is very good, especially for the likes of a Flash game. Great graphics, Great storyline, and a very unique combination of Music/Rhythm games, and Space/Action games. Definitely 5 worthy.