When dad Michael Bublé went away on tour, eight-year-old Noah went to work, practicing piano and learning one of his dad’s biggest hits.

Michael posted to Instagram the moment when Noah revealed the newest song in his repertoire, I’ll Never Not Love You, a Bublé hit.

The pair did an impromptu duet, and while Bublés junior and senior make beautiful music together, the loveliest part was when the crooner got choked up and could hardly continue singing.

“Noah surprised me after I was away on tour,” Michael captioned the video. “He worked so hard to learn this song.

“So proud of my guy.”

Noah’s performance had dad Michael Bublé choked up. Photo: Instagram

Michael Bublé son Noah learns dad’s hit on piano

Noah, who overcame childhood cancer has clearly inherited his dad’s talent for music as he confidently plays the famous son with plenty of expression.

Noah played the dramatic introduction, and Michael began to sing.

“Dude,” Michael said as the piano music swell.

Suddenly, his voice caught in his throat.

“I’m getting choked up he said,” smiling proudly and putting his hand over his heart. A consummate professional, Michael recovered quickly and continued the song.

“More talent in his little fingers than I have in my whole body!!” the proud dad wrote in the comments.

Michael Bublé doesn’t often post about his kids, but he couldn’t resist showing off Noah’s piano skills. Photo: Instagram

Michael Bublé and wife expecting fourth child

Michael and wife Luisana Lopilato are parents to Noah, as well as six-year-old Elias and four-year-old Vida. The couple also announced this year that they’re expecting their fourth child.

The announcement was bittersweet as Michael reflected on the period in their lives when Noah was diagnosed with cancer at age four.

At the time, Luisana was visiting family in Buenos Aires when doctors diagnosed Noah with mumps.

But the discovery of lumps in his stomach led the frightened mum to bring her son back to America to get a second opinion. It turned out the little boy had liver cancer.

Michael, who had been away on tour, rushed home to be with his family and stayed with Noah during his treatment.

The Bublés announced they were expecting their fourth child. Photo: Instagram

“You know, we’ve been through a lot as a family and I think it gave me a great deal of perspective and in that perspective I realised how lucky I am,” he said in a recent Instagram post celebrating Noah’s eighth birthday earlier this year.

“This is a real celebration of life, it really is, he said of his new album, Higher, which featured the song Noah learned on piano.

“And the songs that I wrote were inspired by my family, by my wife and kids. If I can’t be inspired by that beautiful family that I have, I don’t know what would ever inspire me. I’m a lucky man.”