American jazz musician, composer, educator and writer, born 1937 in Pittsburgh; leader of The Untempered Ensemble; Artistic Director of Shadrack, Inc. His primary instruments are Asian double reed horns, including Chinese sonas, Korean hojok and piri, Indian shenai and nagaswarm, Ghanaian bamboo flute, Tibetan trumpet, and digeridoo. Before his retirement he was a full professor at Dartmouth College's Music Department.