Watch American Idol season 16, episode 11 online

Ada Vox sings

Ada Vox sings"Feeling Good on American Idol 2018 Top 24

Platt, who goes simply by Mara Justine on the rebooted show, sang "Run To You", from 1992's "The Bodyguard" soundtrack - a mammoth and challenging ballad - and was almost flawless in her version, leaving "Idol" judges Katy Perry, Luke Bryan and Lionel Richie dumbfounded as she sang. "I know how versatile you are. you could sing addresses in a phone book and I would still listen", as she complimented Mara on her taking of their advice, to tone down her performance - her upbeat take on Etta James' "Something's Got A Hold On Me" was a little over-the-top.

Bryan commended Vox for "bringing the house down" every time she sings, while Richie said, "You are a force to be reckoned with". All three judges then spontaneously walked over to a crying Marcio and gave him a group hug. "I felt you", said Luke, while Lionel said, "You are proving to us all that you want it that badly".

Maddie Poppe of Clarksville, Iowa performs "Brand New Key" on American Idol, Sunday, April 15, 2018.

Amelia Hammer Harris kicked off the show with a take on "Believer" by Imagine Dragons, which the judges seemed to agree wasn't her best.

Jurnee sang Jessie J's "Flashlight", but the judges said her performance was so effortless that they'd prefer her to make it look as though she was actually doing some work.

Garrett Jacobs was just O.K. with his performance of Shawn Mendes' "Treat You Better".

As the pool has been narrowed to the top 24 contestants, 12 of the top 24 finalists perform solos at Academy LA in Hollywood during this week in the competition.

An eastern Iowa native performed before a live audience on Sunday night's episode of American Idol. Caleb, who revealed that he'd lost 70 pounds, sang Thomas Rhett's smash hit "Die a Happy Man". Bryan didn't think it was the best song choice, but Perry said his voice had "wisdom and power". Bryan called her "one of the best singers we have", while Perry advised her to own her talent and "jump into the stardust". Luke admitted, "You didn't have me, until tonight".