or ROUND, in Music, a vocal composition in three or more parts, all written in the same clef, the performers of which sing each part in succession, as indicated by the figures at the beginning and end of each line, viz., the first voice sings the first, second, and third parts in succession, and then the first again, and so on. The second voice begins the first part when the first voice begins the second part. The third voice begins the first part when the second voice begins the second part, and the first voice the third part.