To kick off the singing competition's third season (Sept. 10), Adam Levine (left) says the coaches teamed up for a supersecret performance of a Rolling Stones song.
So has he made up with Christina Aguilera (right)? ''We're no longer bickering,'' insists Levine, who recently released Overexposed, his album with Maroon 5. ''We're getting along.''
He also tapped Mary J. Blige as his adviser this season. Does he have a new coaching strategy, too? In a word: Nope. ''You're not fortifying troops for battle,'' he says. ''You're singing. It should be fun.''