Four partbooks. Copied in Treviso, for use by cathedral choir. Destroyed in 1944, but contents known from thematic catalogue made by chapter archivist Giovanni d'Alessi.
Copied by several scribes; the pieces by Dottino in a different hand from the anonymous pieces before and after; the 7 canzonette (34-40), copied in score at the back of the Bassus book only, in a late 17th/early 18th century hand.
Several blank pages after no. 27 before the hymn, Masses and magnificat.