On his breakout hit, “Pull Up,” Lil Mosey warbled super-confident bars about pulling up in drop-tops before he was even of legal driving age. And on his major-label debut, the Seattle teenager’s still stunting harder than you, with glossy, melody-driven anthems about the things a newly famous 16-year-old should care about (namely, shopping and partying). Best of all is his impeccable ear for beats: “Burberry Headband” is icy and cavernous, and “Kamikaze” soups up a silky R&B sample with turbo-charged 808s. Seattle might not be your first association when it comes to SoundCloud rap stardom, but on Northsbest Mosey seems primed to bring his city into the spotlight.