Ann and Nancy Wilson's combination of soulful vocals and hard-rock moxie has roots that run deep and wide. Ann's powerful, uninhibited singing possesses the fire of Janis Joplin and the elasticity of Aretha Franklin. Rockers like “Barracuda” and “Crazy On You” channel the guitar pyrotechnics of Led Zeppelin and the churn of Steppenwolf, while later ballads like “Alone” recall the moody offerings of Jefferson Airplane.