from Wikipedia.org: The name kyrielle derives from the Kyrie, which is part of many Christian liturgies. A kyrielle is written in rhyming couplets or quatrains. It uses the phrase "Lord have mercy", or a variant on it, as a refrain as the second line of the couplet or last line of the quatrain. In less strict usage, other phrases, and sometimes single words, are used as the refrain.
See Also: Kyrie
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