D-Ju-ms-5: Composer name in ms = 'Petrus de la Rue' / Title as in ms = 'Missa quatuor vocum' / Kyrie I: 'Teuma': 'O gloriosa domina super excelsa sidera'; 'O gloriosa d[omi]na' in the other voices (red ink) / Et in terra: At the bottom of fol. 47v: 'Verte marmoset' / Qui tollis: On fol. 48v.: 'Verte clayskin' / Crucifixus: At the bottom of fol. 52v: 'Verte hanskin' / Pleni: 'Tenor': 'Non sunt loquele neque sermones quorum non audiantur voces eorum' / Benedictus: [Superius] and 'Contr[atenor]': 'Be[ne]d[i]ct[u]s tacet' / In nomine: 'Tenor' and 'Bassus': 'In no[m]i[n]e tacet'; 'Osanna ut sup[ra]'
E-MO-ms-773: Composer name in ms = 'Petrus de [la] Rue' with 'la' written in musical notation / Kyrie I: [Superius]: 'Gloriosa margareta' (red ink); '[T]enor': O gloriosa margaretha xpm [cristum] p[ro] nobis exora' (red ink) / Agnus I: 'Bassus' incomplete due to damaged page
V-CVbav-ms-Capp.Sist.36: Composer name in ms = 'Petrus de la Rue' / Kyrie I: 'Tenor': 'O gloriosa margaretha cristum pro nobis exora' (red ink) / Pleni: 'Tenor': 'Rex venit atq[ue] means norma[m] servabit eande[m]' / 'Benedictus tacet in discantu'; 'Cont[ratenor': 'Benedictus tacet'; 'Tenor' and 'Bassus': 'Duo' / 'Tenor' and 'Bassus': 'In nomine domini tacet'; 'Cont[ratenor]: 'Duo', 'Osanna ut supra et ut prius'
