I will restrict myself to making a guitar hero game
oh thats stupid -_-
First that came in my mind was to make some jazz jack rabbit 2 style platformer with some weird character playing on an accordion as main player, but that was no music game.
I think I will be going for some sort of a simon says game. My ambition for 2009 is to participate in as much challenges as I can, if I can do something good at this resolution, nothing can go wrong for the rest of the year!