V-CVbav-ms-Capp.Sist.19: Composer name in ms (index) = 'Jo. Beaussero[n]' / Composer name in ms = 'Jo. Beausseron' / Title as in ms (index) = 'Missa d[e] beata mari[a]' / Gloria: Trope 'Spiritus et alme' / Credo: With added [tenor] part / Patrem: [Tenor1]: 'Inviolata, integra et casta' / Et incarnatus: [Tenor1]: 'Nostra ut pura' / [Superius]: 'Crucifixus tacet' / Et in spiritum: [Tenor1]: 'Que nunc flagitant devota' / [Tenor]: 'Pleni tacet' / [Bassus]: 'Benedictus tacet' / Agnus II: [Tenor] and [Bassus]: 'Duo' / Agnus III: With added superius part
