They were pioneers in their genre, these passionate musicians for whom electronic music was a true liberation in the predominantly male music world. New technologies expanded the possibilities and changed the way of writing and producing music forever. A fascinating look at the lesser-known yet groundbreaking influence of visionary artists such as Clara Rockmore, Daphne Oram, Bebe Barron, Pauline Oliveros, Delia Derbyshire, Maryanne Amacher, Eliane Radigue, Suzanne Ciani and Laurie Spiegel.