Q: The Podcast From Cbc Radio

After three decades, the Canadian pop-punk band Sum 41 is calling it quits. But when frontman Deryck Whibley started writing the group’s latest album, “Heaven :x: Hell,” he didn’t realize it would be their last. He joins Tom to explain how the writing process helped him reach a decision he’s been debating for years, and how he told the band he was ending things.