USMagazine, Friday, February 3, 2012, 9:44am (PST)
Before they were coaches on The Voice, Christina Aguilera, Blake Shelton, Cee Lo Green and Adam Levine were struggling vocalists just like those they mentor on the NBC hit.
As season 2 of the smash singing competition premieres, Us Weekly takes a trip down memory lane to revisit hilarious old pics of your favorite Voice mentors.
From Shelton's 2005 appearance at the CMT Awards (nice 'do, Blake!) to Aguilera hobnobbing with The Voice host Carson Daly back in the day on MTV's Total Request Live, check out the photo gallery of the gang before they were on The Voice.