The fourth and final mentor for The Voice's
season three has been announced!
Joining team Christina Aguilera
to help shape some up-and-coming singers, will be Green Day's Billie Joe Armstrong.
The news was announced Thursday night via Twitter by the show's staff. The tweet read:
"Welcome Billie Joe (@BJAofficial) to #TeamXtina! We are ready to rock out in Season 3."
Armstrong expressed his love for the show in ...