Carrie Underwood chats with ET backstage at ‘American Idol’ after the show celebrated its own iconic moments, with contestants performing songs made famous by the show and its biggest stars. Carrie reflects on reuniting with some of her fellow season 5 singers and reacts to fellow winner Fantasia’s advice for season 23’s hopefuls. ‘American Idol’ airs Sundays and Mondays on ABC; episodes stream on Hulu.
