Lionel Richie praised her performance, which he said “went from singing to preaching” midway through, adding “you got our attention.”

That she did.

Luke Bryan joked that she had started her own genre, “resurrection rock,” saying, “I loved the whole performance. I think your voice is so listenable. It’s so easy on the ears and then, finally, we see you get a little more power behind that voice. You’re showing me you’re ready to branch out and grow.”

He also called it his “favorite performance” she’s done yet.

Carrie Underwood said she got “chills” watching Harper sing that song.

“We got a glimpse of a fire that is in you,” Underwood said. “You remind me a lot of myself when I was on the show. All of a sudden, things would be falling apart because I was thinking about what I was doing. Try not to. Just tell the story and don’t worry about what any of this is doing.”

What did ‘American Idol’ Top 20 contestants sing in Hawaii?

Here’s who sang and what they did at the Aulani Resort in Hawaii:

• Makiyah did “Bang Bang” by Jessie J, Ariana Grande and Nicki Minaj.
• Jake Thistle did “The Power of Love” by Huey Lewis and the New.
• Genevieve Heyward did “Pink Pony Club” by Chappell Roan.
• Daniel Stallworth did “All Night Long” by Lionel Richie.
• Kyndal Inskeep did “Call Your Mom” by Noah Kahan.
• Kutter Bradley did “It’s Not Over” by Daughtry.
• Jesse Findling did “You Found Me” by The Fray.
• Hannah Harper did “Ain’t No Grave” by Bethel Music and Molly Skaggs.
• Braden Rumfelt did “Love On the Brain” by Rihanna.
• Brooks did “Dancing on My Own” by Robyn in a show of single-named artist solidarity.
• Philmon Lee did “Don’t Stop Believin'” by Journey.
• Rae did “Respect” by Otis Redding (famously covered by Aretha Franklin).
• Lucas Leon did “Just to See You Smile” by Tim McGraw.
• Jordan McCullough did “I Still Haven’t Found What I’m Looking For” by U2.
• Abayomi did “Mamma Knows Best” by Jessie J.
• Madison Moon did “Since U Been Gone” by Kelly Clarkson.
• Chris Tungseth did “Apologize” by OneRepublic.
• Ruby Rae did “Drag Me Down” by One Direction.
• Julian Kalel did “Tourniquet” by Zach Bryan.
• Keyla Richardson did “With a Little Help From My Friends” by The Beatles.