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Brynn Cartelli is not your average Longmeadow 15-year-old. She’s performing at TD Garden on Friday

Brynn Cartelli performs at Staples Center on Jan. 26, 2019 in Los Angeles.Michael Tullberg/Getty Images/Getty Images

Fifteen-year-old Brynn Cartelli has always attended TD Garden as a fan. The thought of performing at Boston’s 19,600-seat arena on Friday night is blowing the Longmeadow teenager’s mind.

“The last time I went to TD Garden was to see Sam Smith live,” said Cartelli, who was crowned the season 14 winner of NBC’s “The Voice” last May. “So it’s really crazy that now I get to go up on that stage. I never thought I was going to perform there, so I’m so excited that I get to.”

Cartelli is currently on her first nationwide tour, opening for Grammy winner Kelly Clarkson, Cartelli’s coach on “The Voice,” along with country pop singer Kelsea Ballerini. Clarkson’s “Meaning of Life” tour kicked off on Jan. 24 in Oakland, Calif. and wraps up on March 30 in Greenville, S.C. The tour will make two New England stops: in Boston for Friday’s show, and at Mohegan Sun Arena in Uncasville, Conn. for two shows on March 14 and 15.

“A lot of my friends and family are going to be out there,” Cartelli said about the TD Garden concert. “So it’s definitely going to be a special show for me.”


Cartelli’s touring experience — which she calls “everything I could have imagined and more” — involves traveling by tour bus with her mom, Deb Cartelli, while writing songs for her yet-to-be-released album with Atlantic Records and also keeping up with her schoolwork online. She’s traded her comfy bed in Longmeadow for a bunk bed on a bus that she said, with a giggle, is “like a cozy coffin.” It’s been a busy winter, but Cartelli isn’t complaining — even as she spoke to Boston.com in the aftermath of Monday’s snowstorm and her friends went snow-day sledding without her back in Massachusetts.

“I’m a little jealous,” Cartelli said with a laugh. “But I’m also having a lot of fun doing what I’m doing.”


Brynn Cartelli with Kelly Clarkson when she won “The Voice” in May 2018. Trae Patton, NBC

Cartelli is the first performer each night, offering a 20-minute set that includes her first single, “Walk My Way,”  and her new single, “Last Night’s Mascara.” She wrote the new song, which was released in December, at home in Longmeadow over the summer.

“It definitely feels like my little baby is out in the world,” she said. “You, like, created it and it’s yours. Then all of a sudden, boom, there it is.”

Clarkson, who said during “The Voice” finale that she was “going to be Brynn’s big sis for life,” hasn’t stopped giving Cartelli advice. Now it’s about touring.

“She and I are very similar in that we’re our own worst critics,” Cartelli said. “She always tells me, ‘You’re not going to be 100 percent at every show. That’s just life as an artist that tours.’ It’s definitely hard for me to accept that I’m not the best performer, singer, every night.”

Cartelli said she’s excited to see where her career goes next. Since winning “The Voice,” she has performed on the “Today” show and in the Macy’s Thanksgiving Day Parade, sung the national anthem at both Fenway Park and Gillette Stadium, nabbed a People’s Choice Award nomination for “Competition Contestant 2018,” and signed with Atlantic Records. One of the highlights, she said, was when she posed for her first magazine cover — the August issue of Nantucket’s N Magazine.

“I think that was, like, one of my favorite shoots I have done, ever,” Cartelli said. “I have been going to Nantucket since I was, like, 5. It was really amazing to just have that opportunity. I have seen, like, [Julian] Edelman on that [magazine] before. So to have my face there, it was creepy, but really cool.”


When the tour is over, Cartelli said she’ll continue working on her first album.

“I definitely want it to be very soulful,” Cartelli said. “I want it to be current. I want it to be like a diary of my life, basically. When I look back in 15 years and am able to see what I created with my music, I want to be able to see everything that I went through and what I was thinking in my head and what was going on in my life.”

In case you’ve forgotten, in 15 years, Cartelli will be 30.

Kristi Palma can be reached at kristi.palma@globe.com.