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
How Sacred Harp music is sung is a note whose duration is increased by half the duration of the base note. It is so called because musical notation uses a dot to express this durational ratio. Traditional Sacred Harp singers often "add dots" to their music, in the sense that they will make the notes falling on the strong musical beat about one and a half times as long as written, with the following note shortened to half of its written duration in compensation. The great majority of the cases seem to involve substitution of the sequence "dotted eighth + sixteenth" for what is written as