Hamiet Bluiett

Julius Hemphill's "Dogon A.D." — the 15-minute piece, and the album that's named for it — was one of the startling jazz recordings of the 1970s, a rethinking of possibilities open to the avant-garde. In the 1960s, free jazz was mostly loud and bashing, until some Chicagoans began playing a more open, quieter improvised music. That inspired St.