(b Santa Rosa, Calif., 1930). Amer. composer. Chairman, mus. dept., Lone Mountain Coll., San Francisco, 1959–67. Comp.‐in‐res., Nat. Centre for experiments in tv, S. Francisco, 1967–71. Teacher at Univ. of Calif., Berkeley, from 1967. Comps. incl. Sir Gawain and the Green Knight, opera (1964); The Captives, ch., orch. (1965); Mutations, orch. (1966); Glossolalia, org., bar., perc., tape (1967); Soundspace for Mozart, fl., elec., tape (1970); Galactic Rounds, orch. (1972); In Celebration of Golden Rain, Indonesian gamelan and pipe org. (1977); Lumen, sop., org. (1980); Orchestra, orch. (1980); Crystal, str. qt. (1981); Salvadore Allende, str. qt., cl., perc. (1983); org. conc. (1986); Shadows, fl., cl., vn., vc., pf., perc. (1987); Palladio, vn., pf., perc. (1989); Primal Balance, fl., db. (1991); sym., str. (1993); Overture concertante, cl., orch. (1995); str. qt. (1995); Prelude, pf. (1997).