In music notation, a sixty-fourth note represents one-sixteenth of a beat and is represented by a filled circle with a stem and four flags or beams. It is so named because it lasts for the duration of one sixty-fourth of a whole note. Also called a hemidemisemiquaver.

A series of sixty-fourth notes on the staff looks something like this:


    /\                                                     
---| /-----------------------------|\----------------------
   |/                |\            |\|\                    
---/-----------------|\-------*----|\|\|\------------------
  /|            *    |\     *|     |\|\|\|                 
-/-|/\--------/|-----|\----|-|-----|-|\|\|-----------------
|  |  |       \|     |/    |/|    *  | |\|                 
|--|--|-------\|----*------|/|------*--|-|-----------------
 \ |  |       \|           |/|        *  |                 
--\|_/--------\|-----------|/-----------*------------------
   |                                                       
  \|