B♭ (musical note) - Wikipedia

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Musical notation - Wikipedia

Musical notation - Wikipedia

Chromatic scale - Wikipedia

TIL the shortest named note in music notation is the demisemihemidemisemiquaver (aka a two hundred fifty-sixth note); it is used in pieces such as Mozart's Variations on Je suis Lindor, K. 354.

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Chromatic scale - Wikipedia

Essay on automated music engraving

The Project Gutenberg eBook of Music Notation and Terminology, by Karl W. Gehrkens

A Dictionary of Music and Musicians/Canon - Wikisource, the free online library