Tedd A Jander: >I know that antiphonal means alternating singing or playing by separate >groups of performers, but exactly how does the word "antiphonal" pertain >to the sacred choral music of the Renaissance and its affect acoustically. The different choirs would be separated physically, perhaps at a considerable distance, so the listener would hear the music coming from different directions. The size of the groups might be quite different also. Jim Tobin