17 Magnificats, 15 psalms, 4 hymns, 9 motets = 45 + 5 dupli-cates = 50
(Guerrero)-1, Morales-9, Pujol-1, Robledo-24, Silos-1, anon-9
194 paper folios, 415 x 275. Original foliation, incomplete; modem pencil foliation, 1-193 (the folio after f. 189 was skipped). Original covers of parch-ment, taken from a chant book of the late 15th or early 16th century. No index. One scribe copied ff. 1'-85; a second scribe copied ff. 85'-164; eight other scribes added pieces at various times afterwards.
Late 16th century. Probably copied at the collegiate church of Santa Maria Mayor. Temporarily removed to the cathedral archives in Huesca, where it was studied by Robert Snow in 1974.
Census-Catalogue of Manuscript Sources of Polyphonic Music 1400-1550