Guitar Hero World Tour: Unlock All Songs Cheat
In Guitar Hero World Tour for the PS3 and Xbox 360, you can unlock all of the songs with this cheat code.
1. From the Main Menu, select Options > Cheats > Enter Cheat.
2. Play the following on guitar:
Blue, Blue, Red, Green, Green, Blue, Blue, Yellow
All the songs will then be unlocked for you to play.