Cantus firmus mass, based on the Flemish song 'O werde mont'
D-Mbs-Mus.ms.-F: Kyrie I: 'Contra[tenor]' and 'Bassus': 'O werde mont' (red ink) / Domine deus: [Superius] and [Contratenor]: 'Duo'; [Tenor] and [Bassus]: 'Domine deus Agnus dei tace[n]t' / Crucifixus: [Superius] and 'Contra[tenor]': 'Duo'; 'Tenor': 'Crucifixus tacet' / Et resurrexit: 'Tenor' and 'Bassus': 'Duo'; [Superius]: 'Et resurrexit tacet'; 'Contra[tenor]': 'Et resurrexit tacetur' / Et in spiritum: 'Tournez' at the bottom of fol. 66r / Pleni: 'Tenor' and 'Bassus': 'Duo'; [Superius]: 'Pleni non sunt'; 'Contratenor': 'Me nemo conduxit' / Agnus II: [Superius] and 'Tenor': 'Duo' / Agnus III: With second bassus part
