Cheats
     Enter  these  in  the Enter Cheat option in the Cheats menu under
options.  These are also the same codes as the Xbox 360's. 
G = Green | R  =  Red  |  Y = Yellow | B = Blue | 
There is no need to strum these, unlike Guitar Hero 3.

[Y] [R] [B] [G] [Y] [R] [R] [R]:   Air Instruments 
                                   (Cannot be combined 
                                   with Invisible Rocker)

[G] [G] [R] [R] [B] [B] [Y] [Y]:   Always Drum Fill

[R] [G] [B] [Y] [G] [Y] [R] [R]:   Hyperspeed (Broken into HyperGuitar, 
                                   HyperBass, and HyperDrum, 
                                   and goes from Off to 5)