{"product_id":"guy-of-saint-denis-tractatus-de-tonis","title":"Guy of Saint-Denis, Tractatus de tonis","description":"The \u003ci\u003eTractatus de tonis \u003c\/i\u003eof\u003ci\u003e \u003c\/i\u003eGuy of Saint-Denis (written ca. 1300-10)\ndiffers from other treatises on plainchant in the depth of its analysis of the\nvarious tones into which chant was traditionally classified. The treatise of\nGuy of Saint-Denis is preserved as the concluding item in an anthology of texts\nabout plainchant that Guy compiled (now London, British Library, MS Harley\n281), beginning with some writings of Guido of Arezzo and a Cistercian tonary,\nbut also including the \u003ci\u003eArs musice \u003c\/i\u003eof\nJohannes de Grocheio and the \u003ci\u003eTractatus de\ntonis \u003c\/i\u003eof Petrus de Cruce. Guy's treatise presents itself as a synthetic\noverview of both the theory and practice of plainchant in a way that combines\nthe very practical reflection of Guido of Arezzo with ideas of more Aristoteleian\ninspired theorists such as Johannes de Grocheio and Peter of Auvergne.","brand":"Medieval Institute Publications","offers":[{"title":"Default Title","offer_id":32071823982675,"sku":"9781580442541","price":22.99,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0278\/1295\/4195\/files\/9781580442541.jpg?v=1778567461","url":"https:\/\/agendabookshop.com\/products\/guy-of-saint-denis-tractatus-de-tonis","provider":"Agenda Bookshop","version":"1.0","type":"link"}