'American Idol' Reveals 4 Amazing Guest Performers, Including a Motown Legend

Rock and Roll Hall of Famer will be joined by three 'American Idol' all stars.

Last night and tonight, American Idol’s Top 26 artists performed at the Aulani, a Disney Resort & Spa in Ko Olina, Hawaii, in front of a live audience, but also for the first time for America’s vote, rather than judges Lionel Richie, Katy Perry and Luke Bryan making the decision of who goes through. Six of the artists will be eliminated—three from each night—and the reveal of who makes the Top 20 will take place on Sunday, April 23.

Each of the Top 20 will have to perform once again to make the Top 12, but they won’t be alone. They will be joined by several guest stars and Parade can exclusively reveal the music artists performing on April 23 and also on Sunday, April 30.

Legendary Motown singer Smokey Robinson will perform a song from his new album Gasms, on Sunday, April 23. But he isn’t the only one. Returning to the American Idol stage will be season 20 winner Noah Thompson and runner-up HunterGirl, who recently released 'Lonely Outta You,' a single about her American Idol experience.

Related: HunterGirl Releases Song Written About Her American Idol Experience

Then on Sunday, April 30, season 8 American Idol runner-up and bestselling artist Adam Lambert will mentor the Top 12 contestants, who will be performing songs from the Rock ‘n’ Roll Hall of Fame, and perform live. The Top 12 will then be reduced to the Top 10.

American Idol airs Sunday and Monday nights at 8 p.m. ET/PT on ABC.

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