G4 says they’ve got a scoop on a Guitar Hero: World Tour peripheral that hasn’t been announced yet, one that’s just for the game’s studio mode to help you make music. It’s not for the game mode at all, apparently. We’re kind of thinkin’ accordion, but G4 guesses it’ll be a keyboard. Another option is something like Beatmania’s turntable/keyboard controller, or this fine musical instrument. [G4]