Dave Baksh of Sum 41 talked with Rodeo Magazine:

“I always think of [All Killer No Filler] as a boot camp in songwriting, and how to play guitar,” Dave recalls. “We had a producer on that record named Jerry Finn. I think the biggest mistake we made in our career was not working with him on every single record. He had such a great vibe in the studio and was such a great teacher. He sat me down and told me I was a garbage guitar player and I needed to get better. He taught me the art of treating every section – whether it be four bars, twelve bars, whatever – as a composition in itself, and you deliver that performance in whatever pocket that is.”

Sum 41 sat down with Kerrang to talk abut their final album:

“It was the music that told me,” Deryck says of the tipping point. “I thought, ‘This is the moment. This is the best idea that Sum 41 has ever had for a record.’ It straddles that line between heavy music and pop-punk that I feel like only we have done over the years. I felt this was the record that I could walk away and hang my hat on. Musically, it’s our evolution, while the title, Heaven :x: Hell, represents our journey. If there’s one record that defines who we are, it’s this one.”