HumanitiesWeb.org - Glossary definition: Canon
Canon

A composition, or part of a composition, in which a melody is repeated by another voice(s) or instrument(s). The second voice(s) or instrument(s) begins before the previous one has finished, which results in overlapping. One of the best-known forms of a canon is the round, in which each voice begins again when it reaches the end of the melody, creating a perpetual canon.

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