Guitar Hero III: Legends of Rock

From the main menu, go to “Options”, then “Cheats”, then “Enter Cheat”. Then play the following notes.

Hyperspeed: O,B,O,Y,O,B,O,Y

Performance Mode: RY, RB, RO, RB, RY, GB, RY RB

Unlocks All Songs: YO,RB,RO,GB,RY,YO,RY,RB,GY,GY,YB,YB,YO,YO,YB,Y,R,RY,R,Y,O

Precision Mode: GR,GR,GR,RY,RY,RB,RB,YB,YO,YO,GR,GR,GR,RY,RY,RB,RB,YB,YO,YO