Tractatus de musica Guidonis d'Arezzo
Subtitle: the Berkeley manuscript (Olim Phillipps 4450).
Contributors: Goscalcus, fl. 1375; Ellsworth, Oliver Bryant
Series: Gregg music sources : Color unica series -- no. 1
Publisher: N.K. Gregg
Published: 1977
Place of publication: Novato, Calif
Language: lat
Number of pages: 148
Subjects: Guido, -- Aretinus, -- d. 1050?; Music theory -- History -- 500-1400.; Manuscripts, Latin (Medieval and modern) -- Facsimiles; Musical instruments.
Notes: Includes "The English translation from the Berkeley manuscript (Olim Phillipps 4450) dissertation, 1969, University of California, Berkeley, Cal., pages 84-145, by Oliver Bryant Ellsworth.

Presents a photographic copy of four musical treatises from a 14th century MS. now at the Music Library of the University of California, MS 744.  Three of the works are dated January 12th, 1375 and may be the work of Goscalcus.  The fourth contains diagrams of 14th century musical instruments.