Schoenberg was born in Vienna in 1874 and died in Los Angeles in 1951. He started almost by self-study. He is the originator of atonal music. His early representative works: Silent Night (1899) and Song of Gray (193) are romantic and impressionist. In 198, he composed three piano pieces, which was the beginning of the twelve-tone system.

Schoenberg trained several excellent students in Vienna. Among them, alban berg developed the theory of twelve-tone system into lyrical style. His representative works include the opera Wochek and the string quartet Lyric Suite. Another of his students, Anton Weber, is the most radical composer of twelve-tone system, and his use of sound has predicted the direction of electronic music.

Schoenberg moved to America in 1933 for political reasons. After Berger's death in 1935, twelve-tone music gradually declined. Schoenberg conducted and performed his own works in the United States, almost all of which were written when he was young. Among his two orchestral variations, Op.31 (1928) is written in an organized twelve-tone group. Wagner's endless melody makes music always in a state of suspension. The result of the denial of the stability of music is the collapse of the traditional musical thinking foundation-tonality. Since ancient times, great wars have often been the mother of new ideas, and music and ideas are inseparable. However, after the Second World War, the twelve-tone system was popularized internationally. The main composers are Fortner and Leibowitz. There are also many fellow travelers in Italy. In fact, today's twelve-tone system has broken the bondage of twelve-tone sequence, and many composers use twelve-tone groups flexibly in a more free way, so it is also called twelve-tone system.