{"slug": "music-theory", "label": "Music theory", "wikipedia": "https://en.wikipedia.org/wiki/Music_theory", "wikidata": "https://www.wikidata.org/wiki/Q193544", "qid": "Q193544", "description": "study of the theoretical aspects of music and its notation", "entries": 8, "years": 8, "span": [840, 1260], "span_label": ["840 CE", "1260 CE"], "topics": [{"title": "Births", "count": 5}, {"title": "Deaths", "count": 2}, {"title": "Science & Discovery", "count": 1}], "related": [], "items": [{"year": 840, "year_label": "840 CE", "section": "Births", "date": null, "text": "Hucbald, Frankish music theorist (or 850)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1367666598#Births", "title": "840", "revid": 1367666598, "section": "Births"}}, {"year": 850, "year_label": "850 CE", "section": "Births", "date": null, "text": "Hucbald, Frankish music theorist (or 840)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1341129147#Births", "title": "850", "revid": 1341129147, "section": "Births"}}, {"year": 930, "year_label": "930 CE", "section": "Deaths", "date": "June 20", "text": "June 20 – Hucbald, Frankish monk and music theorist", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1364919313#Deaths", "title": "930", "revid": 1364919313, "section": "Deaths"}}, {"year": 991, "year_label": "991 CE", "section": "Births", "date": null, "text": "Guido Monaco, Italian monk and music theorist (or 992)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1365261005#Births", "title": "991", "revid": 1365261005, "section": "Births"}}, {"year": 992, "year_label": "992 CE", "section": "Births", "date": null, "text": "Guido Monaco, Italian monk and music theorist (or 991)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1364919750#Births", "title": "992", "revid": 1364919750, "section": "Births"}}, {"year": 1013, "year_label": "1013 CE", "section": "Births", "date": "July 18", "text": "July 18 – Hermann of Reichenau, German music theorist (d. 1054)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1342212600#Births", "title": "1013", "revid": 1342212600, "section": "Births"}}, {"year": 1054, "year_label": "1054 CE", "section": "Deaths", "date": "September 24", "text": "September 24 – Hermann of Reichenau, German music theorist (b. 1013)", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1267065294#Deaths", "title": "1054", "revid": 1267065294, "section": "Deaths"}}, {"year": 1260, "year_label": "1260 CE", "section": "Science & Discovery", "date": null, "text": "German musical theorist Franco of Cologne publishes Ars Cantus Mensurabilis, in which he advances a new theory of musical notation, in which the length of a musical note is denoted by the shape of that note, a system still used today.", "cite": {"url": "https://en.wikipedia.org/w/index.php?oldid=1366894029#Arts_and_culture", "title": "1260", "revid": 1366894029, "section": "Events › By topic › Arts and culture"}}]}