Portuguese Early Music Database (PEM)

Folios A and B are the guard leaves of codex LC 17. Folio A is the initial guard leaf, folio B is the final one. Each guard leaf is made up of two bifolia pasted together. The top bifolium of each guard leaf is pasted upside-down with respect to the bottom bifolium. Each side of the guard leaves can be virtually divided in four sections: top left and right and bottom left and right. The image gallery provides full-page images of each folio side and detailed images of the four sections of each side. The four sections are labelled as TR (top-right), TL (top-left), BR (bottom-right), and BL (bottom-left). Both bifolia of folio A (Ar BL-Ar BR-Av BL-Av BR and Av TR-Av TL-Ar TR-Ar TL) are non-central bifolia. The bottom bifolium of folio B is a central bifolium (Bv BL-Br BR-Br BL-Bv BR). The analysis of the musical contents of guard leaves allowed us to demonstrate that all the bifolia originally belonged to the same gathering indeed, Kyrie Cunctipotens starts on folio A (initial guard leaf) and continues on folio B (final guard leaf) and the Kyrie Fons Bonitatis starts on Br TR and it continues on central bifolium Bv BL-Br BR. It is therefore possible to reconstruct the original order of the gathering: Ar BR, AV BL, Av TL, Ar TR, Bv TL, Br TR, Bv BL, Br BR, Br BL, Bv BR, Br TL, Bv TR, Ar TL, Av TR, Av BR, Ar BL.