<P> The form is found in the military cadence or "Jody" which is used as an a cappella work song or to keep time when marching or running in formation . </P> <P> In Western classical music, call and response is known as antiphony . The New Grove Dictionary defines antiphony as "music in which an ensemble is divided in to distinct groups, used in opposition, often spatial, and using contrasts of volume, pitch, timbre, etc ." </P> <P> Early examples can be found in the music of Giovanni Gabrieli, one of the renowned practitioners of the Venetian polychoral style: </P> <P> Gabrieli also contributed many instrumental canzonas, composed for contrasting groups of players: </P>

The call-and-response concept in blues music was different because