Who is the featured in the documentary,  Imagine the Sound, and is known for his passionately Afrocentric music of the late 1960s?
Imagine the Sound:  It features interviews with and musical and dramatic performances by pianist Cecil Taylor, saxophonist Archie Shepp, trumpeter Bill Dixon and pianist Paul Bley. Archie Shepp: Archie Shepp (born May 24, 1937) is an American jazz saxophonist.
i don't know