Rhythm Heaven

This is one of my favorite games ever! It is way too much fun for me.

If you haven't played it or heard about it, here's some info:
It's a game for DS, and it's entirely about rhythm. There is not a story at all, or even levels, rather, you unlock different minigames, and every 4 minigames you get a "Remix" that mixes those 4 games you've beaten. When you have completed a game, you are given one of few rankings - "Try Again" "OK/Just OK" or "Superb". Getting a superb nets you a medal, and medals can be used to unlock a number of things like minigames and little features.

Also, every once in a while, you'll be given a chance to get a perfect on a game you scored a super on. As you might think, you need to do the minigame without a single mistake. It's easier than it sounds! Getting a perfect unlocks a little text or a song, but it's all about the sense of accomplishment.

All of the game is controlled using the stylus, and there's only two commands: Tap, and flick. The touch screen is only just a color and everything happens on the top screen, but the DS is held sideways for this game.
---

And that's pretty much it! I've played this game through and through. I'm only missing to get perfect in two games out of 50 (Rhythm Rally 2 and Moai do Wop 2), but I've been really close to getting both of them.
I really do enjoy this game, sometimes I even play it while doing something else, or with my eyes closed, since there's audio cues for everything.

Has anyone else played this game? I strongly suggest buying it!