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 Diamond Bonus Challenge for the Fall 
  Out Boy "Sugar, We're Goin' Down" gig. 
  Gwen Stefani: Successfully complete the No Doubt "Just A Girl" gig. 
  Shadow Character: Successfully complete the Gold Bonus Challenge for the David 
  Bowie "Let's Dance" gig. 
  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.