[Collection of treatises on music, musical instruments and astronomy; tonary; Guidonian hand]
Contributors: Hermannus, Contractus, 1013-1054; Guido, d'Arezzo; Guido, d'Arezzo; Guido, d'Arezzo; Guido, d'Arezzo; Johannes, Afflighemensis, active approximately 1100; Carapetyan Collection; Stadt- und Regionalbibliothek Erfurt
Language: lat
Number of pages: 84
Subjects: Music theory
Other titles: Dialogo de musica
Notes: Copied in the second half of the 14th century.

Includes De musica of Johannes of Affligem with tonary (f. 9r-35v) ; treatise on measurements of organ pipes and cymbala (f. 45r-47v); treatises by Guido d'Arezzo (f. 48r-68r), Dialogus de musica attrib. to Odo (f. 68r-74r).