It's been a horrific 24 months for the Canadian crooner, who is back in Australia after four years.
Buble is back to work after he took a break from singing when his son Noah, four, was diagnosed with liver cancer.
Watching the youngster endure the darkness that comes with the illness was trialing for Buble.
“We’ve gone through difficult things and those experiences they change your life."
“At the end of the day what I realised from this [my family] are the only things that really matter.”
Talking to Carrie Bickmore on her radio show, the father also said, "I’m still going through stuff where it’s scary and you know this has been really nice for me to have a place where I can put my mind somewhere else."
“There’s a lot of times when I had bad days and people and their compassion and love .. got me through and I can’t really express how much it means to me to be able to sort of come back in this way and show people in a small way how much I love them and much I appreciate it.”
Bickmore, who lost her first partner Greg to cancer, shared, “I have to say as someone that’s had cancer affect my life dramatically, there is something about having a place to go."
"Like work for me was a sanctuary, a place where just for a moment I was outside that world and could talk about something else, think about something else and it didn’t remove it completely but even just for a moment it was such a joyous place. It’s amazing how often you hear that when you speak to people who has been through something, whatever it is….just how important that is and just how you reflect on your kids and your family and what’s important….”
“Sometimes those moments in life change you forever and you’ll never be the person you were before.”
Buble agreed, “No and I never will … I never will be and that’s a terrible and beautiful thing too."
"I was reading Steve Jobs had written this epic note on his deathbed where he talked about the perspective of being there at the end and realising that all that really matters is love, and relationships and connections and family. It’s good to know before its too late really what matters and doesn’t!”