I saw a trailer for this game a while back and I hadn't really thought to act upon it until just yesterday, and I can say for certain that this beats any other rhythm or music game I've played. The controls are very much so Guitar Hero-esque, but each one does different things when prompted, so you might duck under a floating platform, hop over a bump, and so on with rather visually pleasing aesthetics.
What really grabbed me, however, was the gameplay that is custom-tailored to the music you set the game to. All you have to do is drag and drop your music file onto the game window and off it goes, analyzing the music file and creating a series of obstacles for you to overcome as you run through alongisde the song. No other rhythm or music game I've ever played has had this kind of system where it makes the level for you just by analizing the song. Others I've tried were Frets on Fire, Stepmania, and the like and all of those required you to place the notes/beats/moves yourself if you wanted to play a game with your own song, which, if you enjoy doing that, then keep playing those ones. In the meanwhile, I'll be playing all the songs I want, as soon as the urge strike me in levels that are customized and built right at the very get-go.
And as far as the visual graphics go, the captivation and beauty of such simple design elements are quite stunning, and are such a specific kind of beautiful that it doesn't distract you from the gameplay, yet you can admire it in its entirety while you're playing the song through.
All in all, 9/10. Positively addictive and truly a beautiful-looking game. The musical analytical system is so brilliant, I could see other developers trying to emulate this sort of system for themselves. Bravo, game devs. Bravo.