Kaylee Shimizu and Elizabeth Evans took on an epic Olivia Rodrigo track -- and blew the coaches away!
John Legend had a tough decision on his hands on Monday's all-new episode of The Voice!
Two of the youngest members of Team Legend, Kaylee Shimizu, 17, and Elizabeth Evans, 21, took the stage for their dueling performance in the Battle Rounds, blowing the coaches away with their cover of Olivia Rodrigo's "Traitor."
"That was unbelievable," Niall Horan marveled. "That was the best version of that song I've heard, 100 percent."
Niall praised Kaylee for having so much talent at such a young age, but told John that he's leaning toward Elizabeth to win the Battle. Reba McEntire agreed, noting, "Elizabeth, when you opened your mouth and hit that big note, I was just in awe."
Gwen Stefani said Kaylee has "one of the most incredible voices I've ever heard," but added that Elizabeth held her own: "There's not a lot of girls that have power, and that thing that you have on stage. You're very original and rare."
As for their coach, John said the performance was "stunning."
"Both of you are so interesting and cool," he raved. "Both of you are ridiculous, I can't believe I have to make this decision."
Ultimately, John declared Kaylee the winner of the Battle, but it wasn't the end of the road for Elizabeth, as Reba hit her steal button for the very first time!
"Elizabeth was incredible," the country legend told the cameras. "I had to use my steal for her."
ET spoke with Gwen ahead of this season's Battles, where she opened up about how surreal it is to return to The Voice without hubby Blake Shelton by her side. The Cowboy departed the NBC singing competition earlier this year, after 23 seasons.
"It feels kind of like [my] first season, before I knew he existed," she shared. "It's kind of weird, but it's also like, I'm having so much fun."
"Like, I'm only here because it's fun," Gwen added. "The coaching and actually getting to know your team after the Blinds is my favorite thing, 'cause it's like, the dream's there."
She admitted, however, that it is a little nerve-wracking to look to Blake's chair and instead see The Voice's newest coach -- the Queen of Country herself.
Of how Reba's handled her first season so far, Gwen recalled the Blind Auditions with a laugh.
"She did great. She didn't have to do anything," she remembered. "She'd be like, 'I think you were great. I'd love to have you on my team,' and then they'd be like, 'I pick you!'"
The Voice airs Mondays at 8 p.m. PT and Tuesdays at 9 p.m. PT on NBC.