It is in
|Pro Keys||No Part|
From the Official Rock Band 2 site:
This song is all about keeping rhythm, so make sure your TV is calibrated! The guitar part is built on repetitive two-finger chords with a lot of single notes thrown in—but don’t fall asleep because just when you think it’s an endless sea of green/blue/green/blue, they throw some orange at you.
The song is easy to Gold Star if you save your Overdrive until your meter is full every time.