The Voice: John Holiday again destroys his competition as Knockout Rounds conclude on NBC show

Vocal powerhouse John Holiday once again destroyed his competition on Tuesday’s final Knockout Rounds episode of The Voice.

The 35-year-old music teacher from Rosenberg, Texas, was so good on Eric Carmen’s All By Myself, the coaches couldn’t believe their ears.

As John hit all the high notes, his coach John Legend, 41, pumped his fists and yelled, ‘Sing it, John!’

The frontrunner: Vocal powerhouse John Holiday once again destroyed his competition on Tuesday’s final Knockout Rounds episode of The Voice

‘Is that a person? A real person?’ asked Gwen Stefani, 51. ‘I quit. I actually retire right now.’

She sat back in her chair and eyed the singer, marveling at his talent.

‘It makes me feel so blessed to be on the show and watch somebody like you,’ Gwen told him. ‘The way you deliver the song and the Olympics that are coming out of your mouth—it’s crazy.’

‘John Holiday, as a fan of music and a fan of this show, I wanna say ”I love you”,’ Blake Shelton, 44, agreed. ‘And as a coach on this show, I wanna say ”I hate you.” And that you’re an enormous pain in my a**.’

Amazing voice: The 35-year-old music teacher from Rosenberg, Texas, was so good on Eric Carmen's All By Myself, the coaches couldn't believe their ears

Amazing voice: The 35-year-old music teacher from Rosenberg, Texas, was so good on Eric Carmen’s All By Myself, the coaches couldn’t believe their ears

High notes: John hit some incredibly high notes during his performance

High notes: John hit some incredibly high notes during his performance

Legend picked John, admitting, ‘We’ve never seen or heard anyone that sounds like you on Planet Earth. Of seven billion people. Every choice you made was well-considered and beautifully executed.’

John had chosen the song because it spoke to the loneliness he felt growing up as ‘a Black gay kid in church,’ feeling it was wrong to be himself, and sure he’d remain alone.

Pain reverberated through his take on Céline Dion’s cover version.

Knockout round: Cami Clune and John faced off during the Knockout Rounds matchup

Knockout round: Cami Clune and John faced off during the Knockout Rounds matchup

High praise: As John hit all the high notes, his coach John Legend, 41, pumped his fists and yelled, 'Sing it, John!'

High praise: As John hit all the high notes, his coach John Legend, 41, pumped his fists and yelled, ‘Sing it, John!’

‘I am no longer by myself,’ John admitted. ‘I have been with my husband for seven years and have been blessed to have an extraordinary life with him.’

Listening to John, show mega-mentor Usher, 42, asked himself, ‘How is he able to sing this high? What did I do wrong in this lifetime not to have this voice?’

In the knockouts, John trounced Cami Clune, 20, from Buffalo, New York, who chose to do the Annie Lennox rendition of I Put A Spell On You, the 1956 Screamin’ Jay Hawkins song.

Mega mentor: Listening to John Holiday, show mega-mentor Usher, 42, asked himself, 'How is he able to sing this high? What did I do wrong in this lifetime not to have this voice?'

Mega mentor: Listening to John Holiday, show mega-mentor Usher, 42, asked himself, ‘How is he able to sing this high? What did I do wrong in this lifetime not to have this voice?’

At her coach’s urging, she put her own Billie Eilish-style spin on it, making it sound more eerie and performing it theatrically onstage.

She thanked Legend just as Kelly Clarkson, 38, smashed her buzzer, said, ‘Who cares what he thinks?’ and stole her.

‘I stole Cami because I think she’s the dark horse right now y’all,’ Kelly said to the cameras. ‘And I can’t believe she was up to steal. So boom! I’m gonna come back with that one, and I’m gonna rub that in John’s face.’

Eerie version: At her coach's urging, Cami put her own Billie Eilish-style spin on it, making it sound more eerie and performing it theatrically onstage

Eerie version: At her coach’s urging, Cami put her own Billie Eilish-style spin on it, making it sound more eerie and performing it theatrically onstage

For her own team’s knockout, Kelly pitted two different artists against one another.

Marisa Corvo, a 33-year-old powerhouse belter from Staten Island, New York, picked Cher’s If I Could Turn Back Time, written by her friend Diane Warren, 64.

Diane had supported Marisa after she’d been dropped by her label for being gay.

Stolen away: Cami thanked Legend just as Kelly Clarkson, 38, smashed her buzzer, said, 'Who cares what he thinks?' and stole her

Stolen away: Cami thanked Legend just as Kelly Clarkson, 38, smashed her buzzer, said, ‘Who cares what he thinks?’ and stole her

‘I’m so glad I told you to audition for The Voice,’ the songwriter told Marisa via video. ‘Now you know what you gotta do? You gotta win.’

In the knockout, Marisa brought raw emotion to the Cher song, rendering it as ‘broken’ as Kelly had wanted.

Her show rival was Tanner Gomes, 28, from Yuma, Arizona, who had a blast performing Tim McGraw’s Real Good Man.

Pop power: Marisa Corvo, a 33-year-old powerhouse belter from Staten Island, New York, picked Cher's If I Could Turn Back Time, written by her friend Diane Warren, 64

Pop power: Marisa Corvo, a 33-year-old powerhouse belter from Staten Island, New York, picked Cher’s If I Could Turn Back Time, written by her friend Diane Warren, 64

‘Tanner, you’ve got some cowboy swag,’ Gwen said admiringly. ‘The actual confidence that you have, you’re probably gonna get somewhere, even outside of this show.’

Kelly conceded that Marisa had range, but chose Tanner for his ‘charisma’ and mutability.

‘I love that you’ve shown different sides of country,’ she told the singer. ‘Cause we wanna cry, but we also wanna dance.’

Cowboy swag: Tanner Gomes, 28, from Yuma, Arizona, had a blast performing Tim McGraw's Real Good Man

Cowboy swag: Tanner Gomes, 28, from Yuma, Arizona, had a blast performing Tim McGraw’s Real Good Man

For the episode’s four-way knockout, Team Blake offered up Taryn Papa, 30, from Nashville, who sang Faith Hills’ Cry.

Team Legend’s Julia Cooper, 21, jazzed out to Billie Eilish’s Wish You Were Gay.

Team Gwen’s Larriah Jackson, 15, of Sacramento, California, did Adele’s One and Only.

Nashville singer: For the episode's four-way knockout, Team Blake offered up Taryn Papa, 30, from Nashville, who sang Faith Hills' Cry

Nashville singer: For the episode’s four-way knockout, Team Blake offered up Taryn Papa, 30, from Nashville, who sang Faith Hills’ Cry

Jazzy song: Team Legend's Julia Cooper, 21, jazzed out to Billie Eilish's Wish You Were Gay

Jazzy song: Team Legend’s Julia Cooper, 21, jazzed out to Billie Eilish’s Wish You Were Gay

Team Kelly’s Ryan Gallagher, 31, from Ada, Michigan, covered Andrea Bocelli and Sarah Brightman’s Time to Say Goodbye.

‘I think what’s standing up here is a good representation of how awesome this show can be. Because none of you are similar,’ Kelly said after they performed.

Viewer votes will determine which of the four artists will advance.

The Voice will return next week on NBC.

Killed it: Team Kelly's Ryan Gallagher, 31, from Ada, Michigan, covered Andrea Bocelli and Sarah Brightman's Time to Say Goodbye

Killed it: Team Kelly’s Ryan Gallagher, 31, from Ada, Michigan, covered Andrea Bocelli and Sarah Brightman’s Time to Say Goodbye