Guido of Arezzo (also Guido Aretinus, Guido da Arezzo, Guido Monaco, or Guido d'Arezzo, or Guy of Arezzo) (991/992 – after 1033) was a music theorist of the Medieval era.
Buren, 1985 (критическое издание «Стихотворных правил»);* Guido d'Arezzo's Regule rithmice, Prologus in antiphonarium and Epistola ad Michahelem.