Complete certain Achievements to unlock gamer pictures of the Fab Four for your Xbox Live Profile.

Gamer Picture	How to unlock
Gamer Picture 1: Game Logo	Unlock 3 Achievements.
Gamer Picture 2: Ringo Starr	Unlock one of the "4 Gold Stars on the List" Achievements on Expert Drums.
Gamer Picture 3: Paul McCartney	Unlock one of the "4 Gold Stars on the List" Achievements on Expert Bass.
Gamer Picture 4: John Lennon	Unlock one of the "4 Gold Stars on the List" Achievements on Expert Vocal Solo or Harmonies.
Gamer Picture 5: George Harrison	Unlock one of the "4 Gold Stars on the List" Achievements on Expert Guitar.