Shakira and Usher are back in their spinning red chairs on The Voice, joining Adam Levine and Blake Shelton for the show's sixth season. "The first time in season four, I feel like, that Shak and Usher just were sort of respecting the territory of the show," says host Carson Daly. "But season six, they came back with a vengeance. Everybody on this show has to step up their game."
VIDEO: 'The Voice': Shakira's Laser-Sharp Focus and Usher's New Hairdo