P-Cug (Coimbra) Biblioteca Geral da Universidade MM 1063 (79)

According to ALVARENGA (2021), the medieval use represented by the fragment—almost certainly that of Coimbra Cathedral— shares with Braga a common matrix (and hence their sharing of common core-texts), but their secondary elements and respective chant repertories had different origins, which contributed to shape two closely related yet distinct uses; the growing influence of Braga eventually submerged the characteristic Coimbra traits, some of which, however, survived in the use of Évora.