What is the name of a musical group that consists of nine people?

In music, a nonet is a composition which requires nine musicians for a performance, or a musical group that consists of nine people. The standard nonet scoring is for wind quintet, violin, viola, cello, and contrabass, though other combinations are also found.

Although compositions had previously been composed for nine instruments (Joseph Haydn's four Divertimenti (or Cassations), for 2 oboes, 2 horns, 2 violins, 2 violas, and contrabass, HII:9, 17 [2 clarinets instead of oboes], 20, and G1, Ignaz Pleyel's Nocturne of 1785, for 2 clarinets, 2 horns, 2 violas, contrabass, and 2 hurdy-gurdies, and Franz Schubert's Begräbnis-Feyer (Eine kleine Trauermusik) of 1813 (D 79), for two clarinets, two bassoons, contrabassoon, two horns, and two trombones) the first work to actually bear the title was Louis Spohr's Grand Nonetto in F major, op. 31 (1813), for flute, oboe, clarinet, bassoon, horn, violin, viola, cello, and double bass. Spohr's nonet was so successful that its instrumentation became the standard for subsequent emulation down to the present time.