The term 'WORK FOR NINE PLAYERS' can be summarized as a job description for a NONET, which is a musical composition for nine instruments or voices. A NONET is a type of chamber music that originated in the 19th century and is still popular today. It is typically written for a variety of instruments, including strings, woodwinds, brass, and percussion. The job description for this type of work requires the player to be able to read and interpret music notation, as well as have a good sense of rhythm and timing.