Bublé and his wife, Argentinean actress Luisana Lopilato, immediately put their lives and careers on hold.

“Everyone understood in my world what my priority was,” Bublé told People. “We all go through things. You just hope you learn something about yourself and you learn something about the people with you.”

Bublé took a break from recording and touring because he was ‘so unstable and vulnerable’ during this difficult period. His wife also paused her career.

Thankfully, in February 2018, after having undergone chemotherapy, Noah was reportedly “on the mend.” Last year, at the age of  5, he went into remission following surgery and chemotherapy.

‘I’ve been through a lot, obviously. When I made the last record [in 2018], my son had just been in remission and I wasn’t ready to come back,’ he explained.

Michael Bublé says his son’s cancer diagnosis has forever changed him.

“You don’t go through big things in your life, dramatic things like I’ve gone through or my wife has gone through without it having an effect on you.”

The Canadian star has been very protective of his son’s privacy and refuses to reveal any details of Noah’s treatment.