A 64th note is a musical note that lasts for one sixty-fourth of the duration of a whole note. In standard music notation, it is represented by a filled-in oval note head with a stem and typically has four flags or beams attached to the stem. This note is used to indicate very fast passages in music, allowing composers to convey intricate rhythms. In a measure of music, 64th notes can be grouped with other note values, such as eighth notes or sixteenth notes, to create complex rhythmic patterns. Musicians often use 64th notes in genres that require rapid playing, such as classical music or jazz.