SONATA- from Italian word "suonare" that means "to sound" indicates a piece to be sounded on instruments. It is used specifically for a chamber piece intended for one or two instruments. Depending on the number of players involved, terms trio, quartet, quintet, sextet, septet, octet, and nonet may be used. Term concerto is used for solo instrument with the accompaniment of the orchestra and symphony is for the whole orchestra.