Description:Two musical sensations are set to Open the NFL's first game of the season, Mariah Carey and No Doubt. Mariah and No Doubt will be performing live from Rockefeller Plaza before the New York Giants vs. the Dallas Cowboys game. Carey says she's thrilled to be performing in New York, which she called her hometown and adds she's looking forward to making the season launch 'even more festive.' The hourlong programme show will kick off the 2012 NFL season on Sept. 5.(0:43)