Katy Perry and Lionel Richie are off to merry old England.
Sheeran’s songbook will also get a showcase as theIdolfinalists team up to perform duets of his work.
Additionally, both Sheeran and Morissette will perform live on theIdolstage.
Alanis Morissette and Ed Sheeran guest judge on ‘American Idol’.Charles Sykes/Bravo/NBCU Photo Bank via Getty Images; Mike Marsland/WireImage
American Idolairs Sundays on ABC at 8 p.m.
