A sixty-fourth note, also known as a hemidemisemiquaver, is a musical note that lasts for one-sixty-fourth of a whole note's duration. In terms of rhythmic value, it is represented by a hollow note head with a stem and typically has four flags (or beams) attached to the stem. In common time, a sixty-fourth note is the shortest commonly used note, appearing in various musical genres, particularly in complex compositions or fast passages.
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