Gavin Rossdale's Son Zuma Joins Him on Stage to Sing with Dad and Celebrate His 16th Birthday (Exclusive)

The newly minted 16-year-old joined his dad on stage to sing Bush's hit song "Comedown"

Gavin Rossdale had a special guest with him on stage last night.

The Bush frontman's son Zuma came out on stage with Rossdale at his band's New Jersey concert on Wednesday, Aug. 21. As the teenager joined his dad, Rossdale had the crowd sing "Happy Birthday" to him in honor of his 16th birthday.

In the center of the stage, Rossdale had a cake wheeled out, as well as gold "16" balloons for Zuma, who gave his dad a sweet hug at the end of his birthday song.

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Related: Gavin Rossdale Smiles with His 4 Kids as He Wishes Dads Who Are 'Doing the Best They Can' a Happy Father's Day

Zuma later joined in and played guitar alongside Rossdale as his band played their hit song "Comedown."

"It was so incredible to celebrate Zuma's 16th birthday with 18,000 people screaming happy birthday," the proud dad tells PEOPLE. "The Jersey fans couldn't have made it a more special night for me and my family. Thank you."

Rossdale shares his three sons — Zuma, Kingston, 18, and Apollo, 10 — with ex Gwen Stefani. He is also dad to daughter Daisy, 35.

On Father's Day this year, Rossdale shared a few photos with all four of his kids on his Instagram as he celebrated the summer holiday. Posing with his three sons, Rossdale smiled as they stood by a pool.

He also shared a photo with his daughter Daisy smiling next to a wall of ivy. "Happy father’s day to me and all the dads out there that love their kids and do the very best they can," the musician wrote in his caption.

"I’m really Lucky to have these extraordinary people to call My own. It’s a wild journey where love and support and patience wins all the way. 🖤."

Zuma isn't the only one inheriting his parents' musical talents! This past November, Rossdale spoke to PEOPLE on set of The Talk's Halloween episode and shared that his son Apollo is also taking after his parents.

Related: Gwen Stefani and Gavin Rossdale's 3 Kids: All About Kingston, Zuma and Apollo

"Apollo sang me a song last night for his play," Rossdale began, "and it's really upsetting because I based my tour around his [flag] football season."

"He's quarterback. He's really good. When we were booking the tour, I said, 'Well I have to stay in L.A. to this date because I can't miss it," Rossdale told PEOPLE. "I knew it would mess something up, but I was determined to not miss him."

"I missed the game last season, the last game of the season, the playoffs. It was crushing. I had to watch it over FaceTime. I booked my tour around it and I knew something would give."

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"He freaking got the lead in his own play and I don't come back until the ninth and he's on the first. Anyway, he sang me a song last night and it was incredible from top to bottom and just beautiful pitch, melody, voice, tone, knew all the words."

"I was floored. It's great," the proud dad added.

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