David Tudor was an American pianist and composer of experimental music. He studied piano with Stefan Wolpe and became known as one of the leading performers of avant garde piano music. He gave the first American performance of the Piano Sonata No. 2 by Pierre Boulez in 1950, and a European tour in 1954 greatly enhanced his reputation. Karlheinz Stockhausen dedicated his Klavierstück VI (1955) to Tudor. Tudor also gave early performances of works by Morton Feldman and La Monte Young.