The Voice kicked off with a four-chair turn, Katie, a Chicago-based musician, who belted out "Baby I Love You."
Kelly clearly loved Katie and was passionate about her, but Blake blocked her from grabbing the artist for her team.
Katie therefore had to choose between John, Blake and Gwen. John called Katie "a fountain of excitement" and said she "locked the audience" with her thrilling energy and fire, and Gwen compared the bubbly and unique artist to Cee Lo Green.
"I don't know how you rock like you do, but you rock. You made the show better this year already by being on it," Blake said.
Gwen said Katie could rise to the top because of her personality, style and showmanship on The Voice, as well as her powerful voice, but Katie ended up picking John as her coach.
Next up was Jake, a 24-year-old from Charlotte, NC, who belted out "Wish I Knew You," and Gwen, Blake and John all turned around for the artist.
Gwen complimented Jake's range and bragged about being the frontwoman of a band that plays rock. She said she'd have so many songs for him to sing, and John loved his tone that just "cut through" the vocals.
John joked about how he's never lost The Voice, and Blake noted Jake's performance was "almost like an attack" with his chest voice and growl. Blake said he's the only coach on the show to win with a rock artist.
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Brennan, a 20-year-old from Dacusville, SC, sang "You Are My Sunshine," and Blake turned his chair around within seconds for the country artist, followed by the rest of the three coaches.
Gwen figured she, Kelly and John had lost the artist to Blake, but she said she had a lot to offer a young woman, regardless of her musical genre. Gwen also said she could tap into Blake during emergencies.
"You get me, you get him! You know what I'm saying?! Two for one," Gwen insisted.
John said he'd love to help Brennan reach her full potential and Kelly pointed out she had previously won The Voicewith a country artist, Chevel Shepherd.
But Blake joked the other coaches knew as much about country music as he knows "about getting a Pap smear."
"Country music is what I live and breathe," Blake added.
But Gwen walked over to Blake and sweetly begged, "I really want her," before giving the country star a hug and making him blush.
Kelly just asked for a chance, saying Brennan was simply fantastic.
And then Brennan shocked all the coaches by choosing to join Kelly's team.
Rose, a 34-year-old from Killeen, TX, took the stage with "Preach," and both Kelly and Gwen turned around for her. Rose, however, chose to join "Team Gwen."
Will, a 25-year-old from Santa Barbara, CA, sang "Say You'll Be There," and both Gwen and John turned their chairs around. Will picked John as his coach after the pair performed a little duet together.
Alex, a 25-year-old from Marietta, GA, performed "Love and Happiness," prompting the two ladies of The Voiceto turn their chairs. Gwen said she could help him cross-pollinate and organize his interests, but he chose Kelly since he had opened for one of her concerts before.
Kat, an 18-year-old from Encinitas, CA, took the stage with "Vienna," and her sweet sound persuaded Blake and Gwen to turn their chairs around at the last minute.
Blake got a little desperate and did some begging. He even offered the young vocalist a pair of hilarious waders, so Kat picked Blake as her coach.
Marina, a 37-year-old from Samarkand, Uzbekistan, performed "Walk Me Home" and piqued interest from Kelly and Blake.
Blake loved how connected Marina was to her lyric, saying she had the potential to make it to the finale, and so she joined "Team Blake."
Kyndal, a 22-year-old from Nashville, TN, closed the show with "Never Been to Spain," and Gwen, Blake and Kelly all pressed their buttons. However, Gwen blocked Blake from being able to snag the artist, who even had a mention of Oklahoma in her song.
Gwen said her instincts told her they should work together because she loved her vibrato and distinct sound.
"I'm so inspired. I haven't been here for a while, so I'm ready to go. She has a talk show, she has a hundred kids. She's got a lot on her mind," Gwen said of Kelly, playfully throwing her under the bus.
With that being said, Kyndal selected Gwen as her coach.
Three artists were unfortunately shown not making a team during Monday night's broadcast: CJ Washington, a 29-year-old from Sacramento, CA; Timmy Hood, a 19-year-old from Lenox Township, MI; and Jay Miah, a 30-year-old from Tampa, FL.