To unlock a golden form of any of the four instruments (guitar, bass, drums, and mic), you must beat Solo Mode on any difficulty you choose. You must also use the instrument you intend on unlocking in beating Solo Mode, so that if, for instance, you wanted to unlock the Golden Bass, you should use the bass in Solo Mode.

To unlock a silver form of any of the four instruments (guitar, bass, drums, and mic), you must beat Bonus Tour Mode on any difficulty you choose. You must also use the instrument you intend on unlocking in beating Bonus Tour Mode, so that if, for instance, you wanted to unlock the Silver Bass, you should use the bass in Bonus Tour Mode.

At the "Press Start" screen, press Red, Yellow, Blue, Red(2), Blue(2), Red, Yellow, Blue to unlock all songs. Alternately, press Triangle, Circle, Square, Triangle(2), Square(2), Triangle, Circle, Square on a controller. Note: This code disables saving.