From the main menu, go to “Options”, then “Cheats”, then “Enter Cheat”. Then play the following notes, you must strum every note/chord.

(G=Green, R=Red, Y=Yellow, B=Blue, O=Orange)

Code Effect
(BY) (GY) (GY) (RB) (RB) (RY) (RY) (BY) (GY) (GY) (RB) (RB) (RY) (RY) (GY) (GY) (RY) (RY) Air guitar
(GR) (GR) (GR) (GB) (GB) (GB) (RB) R R R (RB) R R R (RB) R R R Bret Michaels Singer
(GR) (GY) (YB) (RB) (BO) (YO) (RY) (RB) Easy Expert
O, B, O, Y, O, B, O, Y Hyperspeed
(GR) (B) (GR) (GY) (B) (GY) (RY) (O) (RY) (GY) (Y) (GY) (GR) No Fail (does not work in career mode)
RY, RB, RO, RB, RY, GB, RY RB Performance Mode
GR, GR, GR, RY, RY, RB, RB, YB, YO, YO, GR, GR, GR, RY, RY, RB, RB, YB, YO, YO Precision Mode
YO, RB, RO, GB, RY, YO, RY, RB, GY, GY, YB, YB, YO, YO, YB, Y, R, RY, R, Y, O Unlock All Songs Code