musical note duration From Wikipedia, the free encyclopedia
The sixty-fourth note (also called a hemidemisemiquaver or semidemisemiquaver) is a note with a value of 1⁄64 of a whole note which is where it gets its name. It has four flags or beams. In the time signature it has a value of 1⁄16 of a beat. It is the shortest common note in musical notation
Gerou, Tom, and Linda Lusk. 1996. Essential Dictionary of Music Notation. Los Angeles: Alfred Pub. Co. ISBN978-0-88284-730-6
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. ISBN978-1-139-00195-3. 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.