目前用制谱软件程序支援最快的音符為「四千零九十六音符」。 音符時值 Byrd, Donald (ongoing). "Extremes of Conventional Music Notation (页面存档备份,存于互联网档案馆)", Informatics.Indiana.edu. 莫扎特的變奏曲《Je suis
Sciences (Tallinn, Estonia, Aug 1-7 1987). John Esling (2010) "Phonetic Notation", in Hardcastle, Laver & Gibbon (eds) The Handbook of Phonetic Sciences
Press). See [1]. 互联网档案馆的存檔,存档日期2008-05-16. John Esling (2010) "Phonetic Notation", in Hardcastle, Laver & Gibbon (eds) The Handbook of Phonetic Sciences