A sextet is a formation containing exactly six members. It is commonly associated with vocal or musical instrument groups, but can be applied to any situation where six similar or related objects are considered a single unit.
- String sextet –In classical music, a string sextet is a composition written for six string instruments, or a group of six musicians who perform such a composition. Most string sextets have been written for an ensemble consisting of two violins, two violas, and two cellos.Among the earliest works in this form are the six string sextets Op. 23 of Luigi Boccherini, written in 1776. Other notable string sextets include the Opp. 18 and 36 of Johannes Brahms, the Op. 48 of Antonín Dvořák, the Souvenir de Florence (Op. 70) of Pyotr Ilyich Tchaikovsky, Verklärte Nacht (Op. 4) by Arnold Schoenberg, the op. 10 of Erich Wolfgang Korngold, Erwin Schulhoff’s String Sextet (1924) and the String Sextet (1989) of Charles Wuorinen.
- Piano sextet – A piano sextet is a composition for piano and five other musical instruments, or a group of six musicians who perform such works. There is no standard grouping of instruments with that name, and compared to the string quartet or piano quintet literature, relatively few such compositions exist. The best-known piano sextet is probably Chausson’s Concert, widely regarded as one of the masterpieces of the French chamber music literature.