For the rest of the album’s tracks, Lavigne turned to her longtime friends and collaborators Evan Taubenfeld and Butch Walker, as well as Max Martin. Another important influence was Sum 41 frontman Deryck Whibley, who lends his production skills to several tracks, including “Darlin’,” — a song Lavigne wrote at the age of 14. “Whenever I hear ‘Darlin,’ I think of the family room I wrote it in and playing it for my mom,” she says. “So it’s really special for me to have it on the album.”