At one time billed as the Moon Goddess and Andy Warhol It-Girl, singer Nico’s dark, avant-garde music and deep, hypnotic voice were first heard in the Velvet Underground. She continued to work sporadically as a solo artist after leaving the Velvets, though a longtime heroin addiction and methadone dependency sidetracked her career. Check out the documentary on her life, Nico:Icon.