The term 'NONET' is a musical composition consisting of nine instruments or voices. It is a type of chamber music, which is typically performed by a small ensemble of musicians in an intimate setting. The term was first used in the early 19th century and has been used to describe various types of compositions since then. Nonets are often composed for specific instruments, such as strings, woodwinds, brass, or percussion. They can also be composed for mixed ensembles, with each instrument playing its own part. Nonets are usually written in a single movement, but can also be composed in multiple movements.