Blue, blue, red, green, green, blue, blue, yellow.
That's what you need to unlock all songs in Quickplay mode on Guitar Hero: World Tour (click for review), according to Activision. To do so, just venture to the Wii, Xbox 360, PS3, or PS2 options menu, click on cheats, and then enter the above code. Doing so will grant immediate and permanent access to all 87 songs found in the game.
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