Guido o Arezzo

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A picter shawin an eimage o Guido da Arezzo at wark

Guido o Arezzo kent as Guido Aretinus an aw, Guido da Arezzo or Guido Monaco (991/992 – efter 1033) wis a muisic theorist o Mediaeval times. He is thocht o as the inventor o modren muisical notation (staff notation) the notation that replaced neumatic notation; his text, the Micrologus, wis the seicont-maist-widely distreibute wark on muisic in the Middle Ages (efter the writins o Boethius).