Mark Bernath is executive creative director at Wieden+Kennedy Amsterdam. He is also a musician who records psychedelic rock under the name Necessary Explosion, illustrating the tracks with hand-drawn animations created on his smartphone.

In this episode of the “Ad Block” podcast on Ad Age, Bernath talks about his musical influences and how he ended up recording music as a solo act. He performs each track—vocals, guitar, drums—in a studio, separately and mixes them together to create each song. “The demo process would be overdubbing layer upon layer,” he says. “The drums are the thing you build everything around. As long as everything aligns to that, it’ll hold together in the end.”