You searched for: “antiphons
antiphon (s) (noun), antiphons (pl)
1. A hymn or psalm performed by two groups of singers chanting alternate sections.
2. A short piece of biblical or devotional text that is chanted or sung before or after a psalm verse in a Roman catholic or Anglican church service.
3. A response or reply.
4. Literally, a Greek word meaning, “sounding in response”.