Guido of Arezzo
グイード・ダレッツォ
c. 991 – 1050 est.
11th century Italian monk, inventor of modern musical notation. Dates verified against Wikidata, with sources. See who lived at the same time on the interactive timeline.
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Sources
Portrait: Wikimedia Commons / The original uploader was Robbot at Dutch Wikipedia. (Public domain)
Fame score: HPI — Pantheon (CC BY 4.0) / Base data: Wikidata (CC0)