part

Music written for a performer (instrumental or voice) in a piece of music; for example, the flute part, violin part, or soprano part. In a large composition, the score and parts would include the full score (showing all the parts on each page) and the separate parts for the players and/or singers. A part, or voice, can also be an independent line of a contrapuntal work, for example a fugue in four parts.

A large-scale section of a composition is also called a part, for example Part I of Edward Elgar's Dream of Gerontius (1900).