antiphonies
Webster's Dictionary (GCIDE)
1.A musical response; also, antiphonal chanting or signing. [1913 Webster]
2.An anthem or psalm sung alternately by a choir or congregation divided into two parts. Also figuratively. [1913 Webster]
O! never more for me shall winds intone, With all your tops, a vast antiphony.— R. Browning.[1913 Webster]