Robert Plant backstage with The Runaways at a show in Los Angeles in 1975. At just 15 and 16 years old, Joan Jett and Cherie Currie were already rubbing shoulders with figures like Plant, the lead singer of Led Zeppelin, who were then at the height of their fame with “Physical Graffiti.” The Runaways broke the mold by being one of the first rock bands composed entirely of teenage girls, something rare on the mid-70s scene. Their emergence paved the way for subsequent generations of women in Rock History.