Michael Bublé Wishes 'Superhero' Son Elias a Happy 8th Birthday: 'Watching You Grow Is the Greatest Gift'

The "Sway" singer is also dad to three other kids, son Noah and daughters Vida and Cielo

Michael Bublé is celebrating his "superhero" son!

On Monday, the "Sway" singer, 48, posted an Instagram tribute to his second-oldest child, Elias, as he turned 8.

"Happy birthday to our superhero Elias!! 8 years full of adventures with you so far! Watching you grow is the greatest gift. Your mom and I love you more than words!" he wrote, signing the message, "XO Papi."

Bublé's post featured a video montage capturing highlights of the father-son duo's special bond, set to the five-time Grammy winner's own rendition of "You've Got a Friend in Me." The clip shows the pair goofing around together, playing pickle ball and high-fiving each other.

Related: Michael Bublé's 4 Kids: All About Noah, Elias, Vida and Cielo

Other moments include a family dance-off featuring Bublé, wife Luisana Lopilato and their kids. In addition to Elias, the couple shares son Noah, 10, and daughters Vida, 5, and Cielo, 17 months.

Last month, Bublé opened up about Noah's 2016 liver cancer diagnosis during an appearance on the Diary of a CEO podcast, telling host Steven Bartlett that the news "rocked my world."

"It pulled the curtain from over my eyes. And that was a sledgehammer to my reality," he recalled, noting that the experience has forever changed him.

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"I will never be carefree and that's okay," Bublé explained. "It is a privilege for me to exist and that pain, the fear, the suffering that comes with those sort of things is I guess it's part of that beautiful, this life."

Related: Michael Bublé Says It's 'Hard to Go' on Tour While Sharing Sweet Snap Playing Piano with Son Noah

Noah's illness also prompted him to take a hard look at his priorities in life. "I don't think I had my priorities straight," he admitted. "I mean my family was always my love but I don't think I was a terrible guy but dude, it was blinders. Career. Ambition. How do I become the baddest, biggest, best. You know, more ego, more power, more money."

Bublé told Barlett that it was as if he was going through life with "a filter" over everything. "And the moment that they said this is what's happening, that reality hit me. Filter gone," he explained. "And I mean, in a moment. In one moment. Gone."

Noah, who was diagnosed at the age of 3, has been in remission since 2017.

Back in August, the Bublé family marked another special occasion — Cielo's first birthday. In a tribute to his youngest child, the "Haven't Met You Yet" crooner reflected on the joy she has brought to their crew.

"It’s amazing how someday someone comes into your life, and you can’t imagine how you ever lived without them. Happy 1st birthday Cielito ❤️,” Bublé captioned the birthday post.

Before Cielo's arrival, Bublé spoke to Yahoo Life about his and Lopilato's very different parenting styles.

"I'm so proud to be Canadian, but we're very conservative and we're courteous and everything runs sort of in [an orderly fashion]. Argentinians are far freer and it's loose ... and you know what? It made for such a perfect mix," he said in the April 2022 interview.

He added, “I think that mix of our cultures has been such a beautiful thing for my kids because I think they've taken the best of both worlds — and they're very different worlds."

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