Part song
A part song, or part-song or partsong, is a form of choral music that consists of a secular song having been written or arranged for several vocal parts, commonly SATB choir but sometimes for an all-male or all-female ensemble. It is usually primarily homophonic, with the highest part carrying the melody and the other voices supplying the accompanying harmonies, rather than contrapuntal like a madrigal. Part songs are intended to be sung unaccompanied unless an instrumental accompaniment is specified.