Music branding” does not involve stamping horses with band logos (at least not yet). But it does apply to just about anything else in which a commercial entity — from Taco Bell to JPMorganChase — partners with an artist or music company. Which is why, at the beginning of last year’s Brat Summer, Charli xcx appeared as a 3D hologram activated by White Claw drinkers who aimed their phones at a product logo; why Nike spent in the low seven figures to license Led Zeppelin’s “Whole Lotta Love” for a Super Bowl LIX commercial; why Will Ferrell sang a PayPal...