Quartet Quartet In music, a quartet or quartette (, , , , ) is an ensemble of four singers or instrumental performers; or a musical composition for four voices or instruments. In Classical music, the most important combination of four instruments in chamber music is the string quartet. String quartets most often consist of two violins, a viola, and a cello. The particular choice and number of instruments derives from the registers of the human voice: soprano, alto, tenor and bass. In the string quartet, two violins play the soprano and alto vocal registers, the viola plays the tenor register and
String Quartet in Four Parts composed for the same ensemble: "Thirty pieces for String Quartet" of 1983, "Music for Four" of 1987–88 and "Four" of 1989. String Quartet in Four Parts String Quartet in Four Parts is a string quartet by John Cage, composed in 1950. It is one of the last works Cage wrote that is not entirely aleatoric. Like "Sonatas and Interludes" for prepared piano (1946–48) and the ballet "The Seasons" (1947), this work explores ideas from Indian philosophy. Cage began writing the quartet in 1949 in Paris. Prior to beginning to work on the piece, he told his parents that he wanted