Two hundred fifty-sixth note
The two hundred fifty-sixth note (also called a demisemihemidemisemiquaver) is a note which, has a value of  of a whole note. In musical notation it has 6 flags or beams. This is a rare type of note and is rarely seen in musical pieces. Its mainly used in slow pieces of music and are used for a fast section without changing the slow tempo. One example, is when they occur in some editions of the second movement (Largo) of Beethoven's Third Piano Concerto (Op. 37) (1800), to notate fast scales.