I am currently doing a research paper on the music and style of Thomas Tallis (1505-1585) and I have seen the word "antiphonal/antiphonally" many times. 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. Any help or guidance to a source of information would be great. Thanks in advance!!! tedd [log in to unmask] http://members.tripod.com/~teddj_music