Jason Mraz, Julia Michaels, Lukas Graham & More to Sing Duets With 'American Idol' Top 20

Jessica Xie
Julia Michaels performs onstage at Pandora Presents Beyond 2018 on Nov. 13, 2018 at Terminal 5 in New York City.

The American Idol top 20 was revealed on Monday night's (April. 1) show, but more importantly, Katy Perry revealed the roster of all-stars who will appear on next Sunday's (April 7) show for this year's duets round. Just hours after the show wrapped, Perry tweeted out a roster of planned guests that includes: Jason Mraz, Julia Michaels, Brett Young, Pat Benatar and Neil Giraldo, Cynthia Erivo, Lukas Graham, Ben Harper, Elle King, Chris Isaak, Lovely the Band and Shaggy.

Last year's duets episode featured Sugarland, Andy Grammer, Luis Fonsi, Aloe Blacc, Pat Monahan, Allen Stone and Bishop Briggs.


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