- Mark C. Gridley
- , revised by Charles Garrett
(b Chicago, IL, March 11, 1932; d New York, NY, Feb 24, 2007). American jazz violinist, composer, and bandleader. He was influenced by the violinists Jascha Heifetz, Eddie South, and Bruce Hayden, as well as the saxophonists Charlie Parker, Ornette Coleman, and John Coltrane. From 1965 to 1969 he played in Chicago with the Association for the Advancement of Creative Musicians and the Creative Construction Company, becoming the leading violinist in the free jazz style. He then helped to organize the Revolutionary Ensemble (1971) and led his own trio (1977–9) and quintet (1982–3). In addition to collaborating with such musicians as Cecil Taylor, Joseph Jarman, and Myra Melford, he also contributed to the new music scene by serving on the board of directors of the Composer’s Forum. In his later career, he turned to creating theatrical productions, including the operas Mother of Three Sons...