Carl Ruggles

Carl Ruggles (born Charles Sprague Ruggles; March 11, 1876 – October 24, 1971) was an American composer, painter and teacher. His pieces employed "dissonant counterpoint", a term coined by fellow composer and musicologist Charles Seeger to describe Ruggles' music. His method of atonal counterpoint was based on a non-serial technique of avoiding repeating a pitch class until a generally fixed number of eight pitch classes intervened. He is considered a founder of the ultramodernist movement of American composers that included Henry Cowell and Ruth Crawford Seeger, among others.