Man, this was such a coincidence!! I LOVE this piece, and i'm learning one of the voices on bass to play with my friends! Anyway, good game, very interesting concept. You probably know that there are a few things that can be fixed, such as sound quality and playability. Other than that, I agree with the other poeple who have said that the game should be more complete, with more songs and maybe other composers(I love Bach, but a little Beethoven or Handel never hurt anyone), and dfficulty levels would be nice too.
This game might be aimed exclusively for a musician/music lover audience, but I'm sure it would be a hit amongst them