Concerts are scheduled for Potsdam, Massena and Watertown. The performances by the 55-piece orchestra, directed by its founder. “Messiah,” “The Nutcracker,” “The Carol of the Bells,” “Sleigh Ride”. An orchestra (/ ˈ ɔːr k ɪ s t r ə /; Italian: [orˈkɛstra]) is a large instrumental ensemble typical of classical music, which mixes instruments from different families, including bowed string instruments such as violin, viola, cello and double bass, as…