Usher on performing in the Super Bowl: "It's gonna be a celebration"

CBS News - For more and to sign up click here Usher on performing in the Super Bowl: "It's gonna be a celebration" - CBS News Watch CBS News "CBS Mornings" co-host Gayle King sat down with eight-time Grammy-award winner Usher ahead of his performance this Sunday in the Super Bowl halftime show. Be the first to know Get browser notifications for breaking news, live events, and exclusive reporting. Not Now Turn On…