Michael Buble has opened up about how his eldest son’s cancer diagnosis “changed what mattered to me.”

Noah, the “Sway” singer’s three-year-old son, was diagnosed with liver cancer in November 2016.

Noah, now nine, was treated and given the all-clear the following year.

“It, of course, changed me in a big way – it changed what mattered to me, it changed how I saw life,” Buble revealed in a new interview.

“I’d become my alter ego throughout most of my life as an artist, especially on stage.”

“I’d become the superhero I’d always wanted to be,” he added. “Then my wife and I went through something inconceivable, and I lost touch with my alter ego.”

Following Noah’s cancer recovery in 2017, the Canadian artist wrote “Forever Now” to his children.

Buble previously stated that once Noah was diagnosed, he and his wife, Luisana Lopilato, resigned from their careers and relocated to Vancouver to be closer to her family while Noah got treatment.

He said that after going through something “such horrific and frightening” as his son’s cancer treatment, he “felt like I could do anything” to record a new record.

In an interview with the magazine, Buble highlighted his joy at returning to work and preparing for his upcoming UK stadium tour in March.

“I believe this is the best show I’ve ever done,” he stated.

“I want to be a unifier without ever preaching. It entails more than just singing songs or delivering jokes. I’m genuinely trying to unite people and boost them up, especially given the circumstances we’re living in.”

Buble and Lopilato have been married since 2011, and they have three children: Elias, Vida, and Cielo.

“More than anything, my wife and I recognize that each other’s fulfillment is crucial,” the singer remarked of his marriage.

“I’m not claiming we’re perfect – no one is – but we both understand.”

“I won’t be touring for a few months next year because she’ll be filming a movie, so I’ll be Daddy on set, and she’ll do the same for me.”

“Whatever we do, the goal is to be together,” he added.