Sixty-fourth note 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 . 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
Musical note for this note is 440 Hz, although this varies in actual practice (see History of pitch standards). The note-naming convention specifies a letter, any accidentals, and an octave number. Each note is an integer number of half-steps away from concert A (A). Let this distance be denoted "n". If the note is above A, then "n" is positive; if it is below A, then "n" is negative. The frequency of the note ("f") (assuming equal temperament) is then: For example, one can find the frequency of C, the first C above A. There are 3 half-steps between A and C