Michael Buble's Carpool Karaoke goes from fun to serious

The Late Late Show’s Carpool Karaoke segments are usually lighthearted, but last night’s took a serious turn, as Michael Bublé opened up to James Corden about his son Noah’s battle with liver cancer.

The first 10 minutes of the segment is typical Carpool Karaoke fare – the two sang some of the crooner’s greatest hits such as “Haven’t Met You Yet” and “It’s A Beautiful Day” – but things got heavy in the last five minutes.

“It’s so hard to have to acknowledge it ‘cause it’s so painful to have to talk about,” Michael says after James asks him about Noah. “Obviously we got the diagnosis and...that was it, man. My whole life ended.”

An emotional Michael then recounts how his entire family moved to L.A. to be with Noah while he was being treated. As for how he and wife Luisana survived emotionally, Michael says, “I became the strength to somehow pull us and lift us and to be positive.” “And when they got it out and the chemo was done and...they said, ‘We did it, it’s good, he’s O.K.,’ I fell [apart]. I just fell,” he admits. “And my wife picks me up now.”

These days, five-year-old Noah is fine. Michael said. “I say to him, ‘cause he loves Spider-Man, ‘Spider-Man’s amazing, Superman’s amazing but they’re fake. They’re not real. You’re a superhero. You’re my hero. My real superhero.”

Bublé encouraged viewers to contribute to Stand Up to Cancer before he and Corden ended the emotional session with a stirring rendition of “Home.”