Duet (Fr. duo; Ger. Duett; It. duetto)
- Michael Tilmouth
A vocal or instrumental composition for two performers with or without accompaniment, in which the interest is shared more or less equally between the duettists. The term is not normally applied to the repertory of sonatas for keyboard and another instrument from the 18th century on, although it was often favoured along with ‘duo’, by 19th-century publishers. Some composers have preferred ‘duet’ for vocal and ‘duo’ for instrumental pieces, but that usage is by no means universal except in present-day German....