P-G (Guimarães) Arquivo Municipal Alfredo Pimenta N 043
Central bifolium (Fols. A - B). On fol. Ar one can read the Resposory 'Descendit de caelis' (Cantus ID number 006410) followed by its verse. On fol. Av there is a melisma on 'Descendit' which has been compared against the five melismas (A, B, C1, C2, and D) published in KELLY, THOMAS F., 'Neuma Triplex', Acta Musicologica (1988), pp. 1-30, p. 3 (see also pp. 9, 11 et seq.). The comparison shows that the melisma in fragment P-G N 043 is similar to melismas C1 and - its longer version - C2 but it does not exactly match any of them. The melisma is followed by the prosula 'Facture tue rex' (Cantus ID a01658).
On the Responsory Prosula found on fol. Av see: HILEY, DAVID, Western Plainchant: A Handbook, Clarendon Paperbacks, 1995, 200 et seq. KELLY, THOMAS F. 'Neuma Triplex', Acta Musicologica 60/1 (1988), 1-30. STEINER, RUTH, 'The Prosulae of the MS Paris BN lat. 1118', Journal of the American Musicological Society 22 (1969), 367-93.
Small size the neumes, the difference between a lozenge and a more or less square punctum is usually clearly defined. Being the square puncta similar to parallelograms, the axis of the notation is slightly slanted to the right. The lozenge is not used consistently, occasionally it is possible to identify the mode of the chants (see the Cantus Index to the right) but in many occasions this cannot be done either for the poor conditions of the fragment or for the lack of lozenges. When present, the lozenge is written as part of compound neumes (usually descending) and only rarely found in isolation on a single syllable. Custodes written where needed.