The method of the twelve-tone system is to use 12 different tones arranged into a sequence as the basis. It uses techniques such as retrograde, retrograde, retrograde and retrograde to develop this sequence, interweave it vertically and horizontally, and arrange it into a song. . Twelve-tone music is the result of the further development of atonal music. It can control the structure of large-scale musical works, state musical ideas in an orderly manner, and form new organization and logic to replace the organizational and control role of traditional tonality in works. The twelve-tone system is only a sequence technique in terms of pitch, and does not place any restrictions on the rhythm, intensity, timbre, etc. of the work. Only later did Schoenberg's disciples gain full control over these factors.