A composite of several originally separate manuscripts later bound together, (re-)organised to provide nearly a full annual cycle of hymns and other items for Toledan calendar.

• Part I: 13 folios from two manuscripts dating from c1580-1617

• Part II: 41 folios of an original 126 in a choirbook of 1546, the remainder now in ToleBC 18 & 34 (ff. i-lxii now = Part I of ToleBC 18; ff. lxiii-ciii now = Part II of ToleBC 25; ff. ciiii-cxxvi now = Part I of ToleBC 34).

• Part III: 18 folios of a choirbook of 1549, the remainder of which is now ToleBC 34 parts II and IV (originally contiguous but now separated in later re-ordering and re-binding of ms 34. ff. 1-64 now = Parts II & IV of ToleBC 34; ff. 65-82 now = Part III of ToleBC 25

• Part IV: 2 folios of an 18th-century manuscript (c1710-33)

Copied by several scribes, including Martín Pérez. Copied in Toledo, for use by cathedral choir.

84 numbered folios, an index folio & 3 guard sheets. All folios heavily trimmed when volume re-bound in 17th century, with loss of headings & in some cases illuminated initials and capitals. Most folios now stuck together and/or damaged due to severe water damage; text partly illegible on most folios.

Original covers of brown tooled leather over wooden boards, decorated with brass bosses; edges reinforced with tin strips nailed to the boards.

black void mensural

Early 18th century ink foliation, by same scribe who prepared the index.

Painted and inked initials in various colours; some decoration is work of Francisco de Buitrago.

Index at beginning, early 18th century, lists pieces in order of appearance following the re-arrangement & re-binding of the manuscript.

parchment

1 Te Deum, 1 canticle, 4 psalms, 23 hymns, 1 Lamentation, 5 motets = 35

(Ambiela)-1,* Boluda-1, (Guerrero)-6,* (A. Lobo)-15,* (Morales)-7,* Tejeda-1, (Wreede-anon)-1, anon-3

*These attributions are from pencil additions made in index by a 20th-century hand, or from RubiCP. Present condition of manuscript precludes verification of accuracy of these attributions, but the single instance which could be checked raises doubts as to their reliability. Facsimile of ff. 64'-65 published in KrZC makes it possible to determine that DAT of anonymous hymn "Nobis datus nobis natus" are by Wreede, whereas RubiCP erroneously gives the composer as Morales.

i + 84 parchment folios, 677 x 470. Most folios now stuck together and illegible due to severe water damage; only index can be used. Apparently a composite of several originally separate manuscripts later bound together. Original ink foliation? Original covers of brown tooled leather over wooden boards. Index at beginning, apparently not original, lists pieces in order of appearance. Copied by several scribes, including Martín Pérez; see general index for other manuscripts copied by Pérez. Painted and inked initials in various colors; some decoration is work of Francisco de Buitrago.

Dates 1546 and 1549 in earliest layer; other portions apparently date from 17th and early 18th century. Copied in Toledo, for use by cathedral choir.