Composite of three originally separate but related manuscripts or portions of manuscripts, bound together in late 17th century, to create a Liber Magnificarum
Part I is portion of a choirbook of 1546, the other sections from which are now part of ToleBC 18 & 25: 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).
Parts II and IV are portions of a choirbook from 1549; these two parts originally contiguous, but separated by later reordering and
rebinding. The remainder of the manuscript is part III of ToleBC 25 (ff. 1-64 now = Parts II & IV of ToleBC 34; ff. 65-82 now = Part III of ToleBC 25)Part III is a portion of a third manuscript, another section from which is now Part II of ToleBC 18. (ff. i-xxv & xxxii-xl now = Part II of ToleBC 18; ff. cii-cxiiii now = Part III of ToleBC 34; other folios lost)
Copied by Martín Pérez (NooneT). Copied in Toledo, for use by cathedral choir.