Arnold Schoenberg (1874 Vienna – 1951 Los Angeles), was one of the most influential and outstanding composers of the twentieth century.
From 1903, Schoenberg held teaching positions in Vienna and Berlin. Among his students were Anton von Webern, Alban Berg, and Hanns Eisler.
He emigrated in 1933 to the USA and taught from 1936 to 1944 at the University of California in Los Angeles.
Schoenberg developed the twelve-tone composition technique after 1918 and applied to almost all of his works that followed, though he returned at times to tonality.