Prince’s massive discography is packed with pioneering fusions of funk, New Wave, and rock: the simmering “Little Red Corvette,” the wild “Let’s Go Crazy,” the playful “Starfish And Coffee.” But a look at his songwriting credits shows just how much he shaped pop—particularly in the ’80s and ’90s, when Sinéad O’Connor, The Bangles, Sheila E., and others scored career-defining hits with Prince-penned tunes.