HAIM and their producers Ariel Rechtshaid and Rostam have taken to Song Exploder to break down their track “Summer Girl.”

The episode sees the sister trio explaining how Rechtshaid, who is dating band member Danielle Haim, was diagnosed with cancer, and the way that informed their songwriting. Throughout the clip, HAIM reference Lou Reed’s “Walk on the Wild Side,” and even reveal that they tried to get Bono to sing on the track.

Listen to the new episode of Song Exploder below.