Alanis Morissette and Ed Sheeran to Substitute for Katy Perry and Lionel Richie as Guest Judges on 'American Idol'

Katy Perry and Lionel Richie will temporarily leave American Idol to perform at King Charles III's coronation in England.
Alanis Morissette and Ed Sheeran will serve as guest judges and mentors in their absence on the May 7 episode.
Contestants will perform songs by Morissette and Sheeran, and Sheeran will debut his new single.
Perry and Richie's absence comes amid criticism of Perry's judging, though others defend her approach.
Perry and Richie will provide live updates during the episode.