Sixty-fourth Note
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Sixty-fourth Note

In music notation, a sixty-fourth note (American), or hemidemisemiquaver or semidemisemiquaver (British), sometimes called a half-thirty-second note (Burrowes 1874, 42), is a note played for half the duration of a thirty-second note (or demisemiquaver), hence the name. It first occurs in the late 17th century and, apart from rare occurrences of hundred twenty-eighth notes (semihemidemisemiquavers) and two hundred fifty-sixth notes (demisemihemidemisemiquavers), it is the shortest value found in musical notation (Morehen 2001).


Sixty-fourth notes are notated with a filled-in oval note head and a straight note stem with four flags. The stem is drawn to the left of the note head going downward when the note is above or on the middle line of the staff. When the note head is below the middle line the stem is drawn to the right of the note head going upward. A single 64th note is always stemmed with flags, while two or more are usually beamed in groups (Gerou and Lusk 1996, p. 211).

Numerous sixty-fourth notes beamed together

A similar, but rarely encountered symbol is the sixty-fourth rest (or hemidemisemiquaver rest, shown on the right of the image) which denotes silence for the same duration as a sixty-fourth note.

Notes shorter than a sixty-fourth note are very rarely used, though the hundred twenty-eighth note--otherwise known as the semihemidemisemiquaver (Haas 2011, 112)--and even shorter notes, are occasionally found.

See also


  • Burrowes, John Freckleton. 1874. Burrowes' Piano-forte Primer: Containing the Rudiments of Music Adapted for Either Private Tuition Or Teaching in Classes Together with a Guide to Practice, new edition, revised and modernized, with important additions, by L.H. Southard. Boston and New York: Oliver Ditson.
  • Gerou, Tom, and Linda Lusk. 1996. Essential Dictionary of Music Notation. Los Angeles: Alfred Pub. Co. ISBN 978-0-88284-730-6
  • Haas, David. 2011. "Shostakovich's Second Piano Sonata: A Composition Recital in Three Styles". In The Cambridge Companion to Shostakovich, edited by Pauline Fairclough and David Fanning, 95-114. Cambridge Companions to Music. Cambridge and New York: Cambridge University Press. ISBN 978-1-139-00195-3. doi:10.1017/CCOL9780521842204.006. "The listener is right to suspect a Baroque reference when a double-dotted rhythmic gesture and semihemidemisemiquaver triplets appear to ornament the theme" (112).
  • Morehen, John. 2001. "Hemidemisemiquaver". The New Grove Dictionary of Music and Musicians, second edition, edited by Stanley Sadie and John Tyrrell. London: Macmillan Publishers.

Further reading

  • Taylor, Eric. The Associated Board Guide to Music Theory (Part 1) (England: The Associated Board of the Royal Schools of Music (Publishing) Ltd, 1989) Chapter 3 (Continuing with Rhythm), pp. 15-20.

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