Luke Bryan, Lionel Richie, Katy Perry Returning to American Idol
Host Ryan Seacrest will also return for Season 21.
Katy Perry
Katy Perry Shares What She Loves Most About Country Music
She says she may get back to her singer-songwriter roots.
Thomas Rhett, Katy Perry Bring Smash Collaboration to Idol Finale
It's the first time the song has been performed live.