One Love.

Cheat codes that work for the Wii version of Guitar Hero III:

Air Guitar:
YB, GY, GY, RB, RB, RY, RY, YB, GY, GY, RB, RB, RY, RY, GY, GY, RY, RY

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

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

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

Unlock All (does not confirm):
YO, RB, RO, GB, RY, YO, RY, RB, GY, GY, YB, YB, YO, YO, YB, Y, R, RY, R, Y, O

Large Gems:
G, R, G, Y, G, B, G, O, G, B, G, Y, G, R, G, GR, RY, GR, YB, GR, BO, GR, YB, GR, RY, GR, GY

Easy Expert:
GR, GY, YB, RB, BO, YO, RY, RB

No Fail Cheat:
GR, B, GR, GY, B, GY, RY, O, RY, GY, Y, GY, GR

One Love.