Carrie Underwood's debut as an American Idol judge took an emotional turn when a heartfelt audition left her wiping away tears.

Photo by Mike Coppola/Getty Images When 25-year-old Breanna Nix stood in front of the American Idol judges, she had the support of her family with her. As her husband played the piano for audition in a teaser for the Sunday,

Luke Bryan and Carrie Underwood ran into each other backstage at Nashville’s Bridgestone Arena — a familiar haunt for two veteran country stars with more than 50 No. 1 hits between them. The singers were there to take part in a concert tribute to the late Toby Keith,