V-CVbav-ms-Capp.Sist.26: Composer name in ms (index) = 'Con[stanzo] Festa' / Composer name in ms = 'Consta[n]tius Festa' / Title as in ms (index) = 'Missa' / Mass without Credo / [Superius]: 'Pleni tacet' / [Superius] and [Contratenor]: 'Benedictus tacet'; [Tenor] and [Bassus]: 'Duo' / Agnus I-III: Double texted / Agnus II: [Contratenor] and 'Bassus': 'Se[cun]dus Agnus tacet'
