Very original idea
I love the idea concept and the colors of the game are very nicely done too. It takes a while to get into the swing of it though but that's how it goes for all rhythm games I find so that's perfectly acceptable. Song choices are very nice and people can't get frustrated by this game because rhythm games aren't like easy shooters where everything is explained and can be beaten in an hour. They take time to go through so if anyone flames this because they find it too hard they obviously haven't the patience to get into the swing of it and get through the game.
I'm still on the Medium song but I'm almost got through the whole thing so that's good. Fast songs take time to digest and no one can get it that easily (hell I had troubles on the easy level for a while).
So good game, I give a 15 out of 10 xD -lame joke- <3
7 for violence because hurting those poor...worm things made me cry ;o; </sarcasm>