In ET's exclusive sneak peek of 'American Idol,' Aniston Pate has judges Lionel Richie, Luke Bryan and Katy Perry in awe over her Dolly Parton-esque vocals during her audition. Catch the full episode of 'American Idol,' which airs Sunday, March 3 at 8 p.m. ET on ABC, with episodes available the next day on Hulu.