P-G (Guimarães) Arquivo Municipal Alfredo Pimenta N 020
Later-hand inscriptions on fol. Av, bottom right corner (written reversed with respect to the text).
Medium-size neumes. The difference between a lozenge and a more or less square punctum is usually clearly defined. The lozenge is used both isolated and in descendant and ascendant combinations. The lozenge is not used consistently but its presence is enough to clarify the mode of each chant. Although there are no lozenges in the Responsory ‘In omnem terram’ (Cantus ID 006919) and its verse, it is possible to speculate that these two chants were sung in the 6th mode. In the Antiphon ‘Ponens Petrus’ on ‘maNUM eRExit’ (fol. Ar) the scribe mistakenly wrote two almost consecutive lozenges two and three steps above the red line, which in this chant represents ‘C’. The Responsory ‘Surge’ (same page) is in 4th mode and the line here means E. Custodes are not found.