Frontispiece to Florence, Biblioteca Medicea-Laurenziana, MS Plut. 29.1 (ca. 1245-1255). (Notre-Dame polyphony manuscript “F”)
The painting shows Philsophy on the left, and Boethius’s three divisions of music on the right: musica mundana (top), musica humana (middle), and musica instrumentalis (bottom).
There is an article by George Catalano in Essays in Medieval Studies, 7, pp. 41-50, discussing this image. The article is called “Scholastic Imagery in the Florence Manuscript.”