Original URL: http://www.psxextreme.com/ps3-cheat-print/314.html
Guitar Hero IV: World Tour

Enter the cheats at the main menu:

AT&T Park (Venue) - Yellow, Green, Red, Red, Green, Blue, Red, Yellow
Aaron (Character) - Blue, Red, Yellow, Yellow, Yellow, Yellow, Yellow, Green
Always Slide Mode - Green, Green, Red, Red, Yellow, Red, Yellow, Blue
Automatic Kick Drum - Yellow, Green, Red, Blue, Blue, Blue, Blue, Red
Best Buy Kid (Character) - Green, Red, Blue, Green, Red, Blue, Blue, Green
Different Flame Colors - Green, Red, Green, Blue, Red, Red, Yellow, Blue
Different Gem Colors - Blue, Red, Red, Green, Red, Green, Red, Yellow
Different Star Colors - Red, Red, Yellow, Red, Blue, Red, Red, Blue
European Kid (Character) - Blue, Red, Blue, Blue, Yellow, Yellow, Yellow, Green
Hyperspeed Mode - Green, Blue, Red, Yellow, Yellow, Red, Green, Green
Invisible Characters - Green, Red, Yellow, Yellow, Yellow, Blue, Blue, Green
Invisible Instruments - Red, Red, Blue, Yellow, Green, Green, Green, Yellow
Line Six Notes - Green, Red, Yellow, Blue, Red, Yellow, Blue, Green
Performance Mode - Yellow, Yellow, Blue, Red, Blue, Green, Red, Red
Rina (Character) - Blue, Red, Green, Green, Yellow, Yellow, Yellow, Green
Unlock All Songs (Quick Play) - Blue, Blue, Red, Green, Green, Blue, Blue, Yellow
Vocalists Breathe Fire - Red, Green, Green, Yellow, Blue, Green, Yellow, Green