Instructions
Press the "Start" button on a normal PlayStation 3 controller to launch the menu.
Use the arrow buttons on the controller to navigate to "Options" and press the "X" button.
Navigate to the "Cheats" option and press the "X" button on the controller.
Go to "Enter New Cheat" and confirm by pressing the "X" button.
Press the following color combination on the buttons of the Guitar Hero guitar controller:
"Blue," "Blue," "Red," "Green," "Green," "Blue," "Blue," "Yellow."
Exit the game menu by repeatedly pressing the "Circle" button on the regular controller.
Start the game as you normally would. You should now see all tracks, including "Hotel California," unlocked and playable in your game.