Velvet-throated songstress Nina Simone hypnotized audiences with her signature renditions of standards from the American songbook. But on September 15, 1963, a devastating explosion in Birmingham, Alabama, rocked our entire nation to the core, and from the memory of the four little girls killed in that tragedy came “Four Women” — along with Simone’s other activist anthems like “Mississippi Goddam,” “Old Jim Crow,” and “To Be Young, Gifted, and Black.” Through storytelling and song, Nina Simone: Four Women reveals how this iconic chanteuse found her true voice — and how the “High Priestess of Soul” defined the sound of the civil rights movement.