Women Rock honors the unique contributions of 50 female artists with noteworthy contributions to music. Women played crucial roles in the history of rock music. Without Sister Rosetta Tharpe, a gospel-singing electric guitarist, rock might never have been born. Janis Joplin and Grace Slick were forefront in the growing hippie subculture that marked a decade. Aretha Franklin gave sound to the civil rights movement. Riot Grrrl...