At the 'Main' menu go to 'Options' and select 'Cheats' and then 'Enter New Cheat' and input one of the following codes to unlock the corresponding feature. If the code has been entered correctly a confirmation message will appear on screen.

Invisible Rocker:
Press Blue, Red(4), Yellow, Blue, Green.

Vocal Fireball:
Press Green, Blue, Red(2), Yellow(2), Blue(2).

Always Drum Fill:
Press Green(2), Red (2), Blue(2), Yellow(2).

Hyperspeed:
Press Red, Green, Blue, Yellow, Green, Yellow, Red(2).

Extra Line 6 Effects in the Music Studio:
Press Green, Red, Yellow, Blue, Red, Yellow, Blue, Green.

Air Instruments:
Press Yellow, Red, Blue, Green, Yellow, Red(3). Note: This feature cannot be combined with Invisible Rocker.

Star Colour:
Press Green, Red, Green, Yellow, Green, Blue, Yellow, Red.

Gem Colour:
Press Red(3), Blue(3), Yellow, Green.