Beginning his career as a Harry Nilsson-esque piano man, this shaggy-haired Vancouverite songwriter became a favorite of Adele’s early on, giving him an opportunity to showcase his imperial pop songwriting on her “When We Were Young.” Since then, Jesso’s list of credits across subgenres has become formidable, including numerous collaborations with One Directioners and cowrites with stylistic chameleons like Orville Peck and Cautious Clay.