Activate the following cheats by entering the corresponding code at the main menu:

CHEAT FUNCTION - CHEAT CODE
Amazon.com guitar - Blue, Orange(2), Blue, Orange(2), Blue(2)
Ovation D-2010 guitar - Orange, Blue, Orange(2), Blue(2), Orange, Blue
Stop! Guitar - Orange(2), Blue(2), Orange, Blue(2), Orange

Unlock the following instruments by perfoming the corresponding tasks:

INSTRUMENT - HOW TO UNLOCK
Baroque stage kit - "Expert Hall of Fame Induction" in Pro Drums: Expert Song Progress.
Clear microphone - "Expert Hall of Fame Induction" in Vocal Harmony: Expert Song Progress.
Cthulhu's Revenge guitar - "Expert Hall of Fame Induction" in Pro Guitar: Expert Song Progress.
DKS-5910 Pro-Tech high performance kit - "Expert Hall of Fame Induction" in Drums: Expert Song Progress.
Gold microphone - "Expert Hall of Fame Induction" in Vocals: Expert Song Progress.
Gretsch Bo-Diddley guitar - "Expert Hall of Fame Induction" in Guitar: Expert Song Progress.
Gretsch White Falcon guitar - "Expert Hall of Fame Induction" in Bass: Expert Song Progress.
The Goat Head bass - "Expert Hall of Fame Induction" in Pro Bass: Expert Song Progress.
The Green Day guitar - "Welcome to Paradise" in Guitar - Green Day - Rock Band.
VOX Continental keyboard - "Expert Hall of Fame Induction" in Keys: Expert Song Progress.
Yamaha CS-50 keyboard - "Expert Hall of Fame Induction" in Pro Keys: Expert Song Progress.

Earn the "Guitar Immortal" goal with five stars on fifty medium difficulty Rock Band 3 songs, or three stars on a higher difficulty setting.