In the 20th century music, in addition to the use of traditional tonality, harmony, rhythm and other basic elements of music, the more non-traditional elements involved in music composition, or even fundamentally determines the structure of music. As the 20th century, the West, one of the most important composers, Ligeti is no doubt of particular concern. In his music, the rhythm of a very important position to occupy. This article by Ligeti, "Chamber Concerto" in the rhythm mode, beat and rhythm of a detailed portfolio analysis, further work in the rhythm of the performance in the form of an attempt to reveal the layout and work out the rhythm of the overall structure of the logical relationship between the existence, thereby Ligeti summed up the 60s music the rhythm of the characteristics and structure of thinking.