In the 20th century, music was no longer dominated by the elements of the traditional music period.

Music in the 20th century is no longer dominated by melody, rhythm, harmony, mode and tonality in the traditional music period. Because in melody, traditional music is based on fluency, natural ups and downs, and regular progress, while the melody of music in the 20th century is often not smooth, jumping violently, sometimes even without reading sentences, and sometimes it avoids the melody factors in traditional music and replaces the melody with other vocal methods. Rhythm and beat: Rhythm is the skeleton of traditional music, which is well organized; In modern music, the rhythm is free and changeable, some have polyrhythm, no rhythm, no beat, no bar line, some have the player's free arrangement of rhythm, and some have "only rhythm". Therefore, music in the 20th century is no longer dominated by elements such as melody, rhythm, harmony, mode and tonality in the traditional music period.