At the start of the 1960s, jazz entered a unique period of revolution as African-American musicians redefined the art form in the context of the Civil Rights Movement, Afro-centric rhythm and thought and an ideology of black economic empowerment. John Coltrane, Ornette Coleman, Sun Ra, Pharoah Sanders, Albert Ayler and others developed a new cosmology of sound that was as revolutionary as the social and political changes that took place in America throughout the decade. From the musical explorations of John Coltrane, Cecil Taylor and Ornette Coleman to the collective and community concerns of...