At the main menu, select "Options", "Cheats", "Enter New Cheat", then enter one of the following codes to unlock the corresponding cheat option. If you entered the code correctly, a message will appear.

Most Characters

Press Blue, Yellow, Green, Yellow, Red, Green, Red, Yellow.

All Hammer Ons/Pull Offs

Press Red, Green, Blue, Green, Blue, Green, Red, Green.

Auto Kick

Press Yellow, Green, Yellow, Blue(2), Red, Blue, Red. Alternately, successfully complete the "Duran Duran - Rio" Gold Bonus Challenge in Career mode to unlock the "Auto Kick" option.

All Slider Gems

Press Yellow, Green, Yellow(3), Red, Blue, Red. Alternately, successfully complete the "Styx - Mr. Roboto" Platinum Bonus Challenge in Career mode to unlock the "All Slider Gems" option.

Focus Mode

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

Performance Mode

Press Yellow(2), Blue, Green, Blue, Red(3).

HUD Free Mode

Press Green, Red, Green, Red, Yellow, Blue, Green, Red. Alternately, successfully complete the "Alphabeat - Fascination" Platinum Bonus Challenge in Career mode to unlock the "HUD Free Mode" option.

Electrika Steel

Press Blue(2), Red, Yellow, Red, Yellow, Blue(2).

Air Instruments

Press Blue, Yellow, Blue, Red(2), Yellow, Green, Yellow. Alternately, successfully complete the "Aly & AJ - Like Whoa" Platinum Bonus Challenge in Career mode to unlock the "Air Instruments" option.

Invisible Characters

Press Green, Red, Yellow, Green, Yellow, Blue, Yellow, Green. Alternately, successfully complete the "Filter - Take A Picture" Platinum Bonus Challenge in Career mode to unlock the "Invisible Characters" option.

Successfully complete the indicated task in Career mode to unlock the corresponding character:

Adam Levine: Successfully complete the Maroon 5 "She Will Be Loved" gig.
Adrian Young: Successfully complete the No Doubt "Don't Speak" gig.
Frankenrocker: Successfully complete the "Fall Out Boy - Sugar, We're Goin' Down" Diamond Bonus Challenge.
Golden God: Successfully complete the "Robbie Williams and Kylie Minogue - Kids" Diamond Bonus Challenge.
Gwen Stefani: Successfully complete the No Doubt "Just A Girl" gig.
Shadow Character: Successfully complete the "David Bowie - Let's Dance" Gold Bonus Challenge.
Skeleton Character: Successfully complete the "Poison - Every Rose Has Its Thorn" Platinum Bonus Challenge.
Taylor Swift: Successfully complete the Taylor Swift "Love Story" gig.
Tom Dumont: Successfully complete the No Doubt "Just A Girl" gig.
Tony Kanal: Successfully complete the No Doubt "Don't Speak" gig.