Of or pertaining to antiphony, or alternate singing; sung alternately by a divided choir or opposite choirs.
division of the organ placed at a distance from the main organ and the console, permitting echo-like effects. Named from 'antiphon', or liturgical verses recited alternately by clergy and congregation. Can also be called ECHO
a performance style in which an ensemble is divided into two or more groups, which perform in alternation with each other, with one group answering another. [SRM