an·tiph·o·ny /ænˈtɪfəni/
  交互輪唱的歌;唱和
  An·tiph·o·ny n.; pl. Antiphonies
  1. A musical response; also, antiphonal chanting or signing.
  2. An anthem or psalm sung alternately by a choir or congregation divided into two parts. Also figuratively.
  O! never more for me shall winds intone,
  With all your tops, a vast antiphony.   --R. Browning.
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  antiphony
       n 1: alternate (responsive) singing by a choir in two parts
       2: a verse or song to be chanted or sung in response [syn: antiphon]