Cheats:
Activate the following cheats by entering the corresponding sequences of buttons at "Main Menu" > "Options" > "Cheats":
CHEAT FUNCTION - CHEAT CODE
Air Instruments - red, red, blue, yellow, green, green, green, yellow
Always Slide - green, green, red, red, yellow, red, yellow, blue
AT&T Ball Park - yellow, green, red, red, green, blue, red, yellow
Auto Kick - yellow, green, red, blue, blue, blue, blue, red
Extra Line 6 Tones - green, red, yellow, blue, red, yellow, blue, green
Flame Colors - green, red, green, blue, red, red, yellow, blue
Gem Colors - blue, red, red, green, red, green, red, yellow
Hyper Speed - green, blue, red, yellow, yellow, red, green, green
Invisible Rocker - green, red, yellow, yellow, yellow, blue, blue, green
Performance Mode - yellow, yellow, blue, red, blue, green, red, red
Star Colors - red, red, yellow, red, blue, red, red, blue
Unlock Aaron Steele - blue, red, yellow, yellow, yellow, yellow, yellow, green
Unlock All Quick Play Songs - blue, blue, red, green, green, blue, blue, yellow
Unlock Johnny Viper - blue, red, blue, blue, yellow, yellow, yellow, green
Unlock Nick - green, red, blue, green, red, blue, blue, green
Unlock Rina - blue, red, green, green, yellow, yellow, yellow, green
Vocal Fireball - red, green, green, yellow, blue, green, yellow, green
"Pull Me Under" song:
To unlock the credits song "Pull Me Under", complete a career for any instrument on any difficulty.
Unlockable characters:
Unlock the following characters for purchase by performing the corresponding tasks:
CHARACTER - HOW TO UNLOCK
Billy Corgan - Play the song 'today' in the band career.
Hayley Williams - Play the song 'misery business' in the vocals career.
Ozzy Osbourne - Play the ozzfest gig in the vocals career.
Rockubot - Complete the drum career.
Skeleton - Complete the vocals career.
Sting - Play the song 'demolition man' in the bass career.
Ted Nugent - Beat his guitar battle in the guitar career.
Travis Barker - Play the song 'dammit' in the drum career.
Zakk Wylde - Beat his guitar battle in the guitar career.
Easy vocals:
Turn the volume up so that the microphone picks up the in-game vocals. You should get 100% on every song.
Easy money:
Use a rubber band to hold down the whammy bar so it will do the whammy for all long notes. At the end of the song you will get the Whammy Maestro bonus and a little extra bit of money. This also helps you get more points.
There are two songs in Bass Career mode that can give you $200 to $280 in Easy mode and about $300 in Medium mode. Play "The Joker" (Steve Miller Band) and "Overkill" (Motor Head). To get 100% notes and no star power usage, make sure it is at maximum power and use a rubber band to hold the whammy bar down. This will result in a fair bit of money, but if you miss just one note you will only get roughly $120 to $155 in Easy mode.
A few more songs you can get $200 or above on is "Band On The Run", "Spiderwebs", "Prisoner Of Society", and "Crazy Train".
Play "Mountain Song" by Jane's Addiction on guitar under the Easy difficulty setting. This is a very easy song, and will result in $600 when done with five stars.
No whammy bonus:
When playing any song and getting the Whammy Maestro, if you use the touch sensor (on a Guitar Hero World Tour controller), you will not get the bonus. They will cancel each other out and you will lose a bit of money.