What is a composition that chanted or sung responsively?

A composition that is chanted or sung responsively is called an antiphon. It is a type of call-and-response vocal music, where one voice or group sings a phrase or line, and then the other voice or group responds with a different phrase or line. Antiphons are commonly found in religious music and chanting, such as in Christian liturgy, Jewish prayers, and Islamic devotional music. They often take the form of a soloist or choir singing a verse, followed by the congregation or a chorus responding with a refrain. Antiphonal singing creates a sense of dialogue between different parts of the musical ensemble and can be used to enhance the emotional and spiritual impact of the music.