He would self-identify as a member of the Jewish religion later in life (Marquis Who's Who n.d.).In October 1901, he married Mathilde Zemlinsky, the sister of the conductor and composer Alexander von Zemlinsky, with whom Schoenberg had been studying since about 1894.; 13 September 1874 – 13 July 1951) was an Austrian composer, music theorist, and painter.He was associated with the expressionist movement in German poetry and art, and leader of the Second Viennese School.Mahler worried about who would look after him after his death.Schoenberg, who had initially despised and mocked Mahler's music, was converted by the "thunderbolt" of Mahler's Third Symphony, which he considered a work of genius.In the 1920s, Schoenberg developed the twelve-tone technique, an influential compositional method of manipulating an ordered series of all twelve notes in the chromatic scale.He also coined the term developing variation and was the first modern composer to embrace ways of developing motifs without resorting to the dominance of a centralized melodic idea.
He emigrated to the United States of America in 1934.
This was the first composition without any reference at all to a key (Stuckenschmidt 1977, 96).
Also in this year, he completed one of his most revolutionary compositions, the String Quartet No.
Schoenberg's approach, both in terms of harmony and development, has been one of the most influential of 20th-century musical thought.
Many European and American composers from at least three generations have consciously extended his thinking, whereas others have passionately reacted against it.