The composer's early works bear the unmistakable stamp of high German Romanticism, perhaps nowhere more evident than in his first important composition, Verklärte Nacht, Op. 4 (1899). With works like the Five Orchestral Pieces (1909) and the epochal Pierrot lunaire (1912), Schoenberg embarked upon one of the most influential phases of his career. Critics reviled this "atonal" (Schoenberg preferred "pantonal") music, whose structure does not include traditional tonality. Still, the high drama and novel expressive means of Schoenberg's music also inspired a faithful and active following. Most notable among Schoenberg's disciples were Alban Berg and Anton Webern, both of whom eventually attained stature equal to that of their famous mentor. These three composers -- the principal figures of the so-called Second Viennese School -- were the central force in the development of atonal and 12-tone music in the first half of the 20th century.
Schoenberg's Suite for Piano (1921-1923) occupies a place of central importance in the composer's catalog as his first completely 12-tone composition. Though the 12-tone technique represents only a single (and by no means predominant) aspect of the composer's style, it remains the single characteristic most closely associated with his music. Schoenberg made repeated, though varied, use of the technique across the spectrum of genres, from chamber works like the String Quartet No. 4 (1936) and the Fantasy for Violin and Piano (1949) to orchestral works like the Violin Concerto (1935-1936) and the Piano Concerto (1942), to choral works like A Survivor from Warsaw (1947).
Schoenberg fled the poisonous political atmosphere of Europe in 1933 and spent the remainder of his life primarily in the United States, becoming a naturalized citizen in 1941. During this phase of his career, he returned to frank tonality at times, as in the Theme and Variations for band (1943), reaffirming his connection to the great German musical heritage that extended back to Bach. For Schoenberg, the dissolution of tonality was a logical and inevitable step in the evolution of Western music. Despite a steady stream of critical brickbats throughout his entire career, the composer, whose life inspired one of 20th century's great novels, Thomas Mann's Doctor Faustus, persisted in his aims, insisting that his music was the result of an overwhelming creative impulse. Though debate over the man and his music rages on, Schoenberg is today acknowledged as one of the most significant figures in music history. The composer, a well-known triskaidekaphobe, died in Los Angeles, California on July 13, 1951.