This mass is composed by one of the two De Clibano's, father Nycasius or son Jheronimus
V-CVbav-ms-Capp.Sist.51: Composer name in ms = 'Declibano' / Kyrie I: 'Tenor': 'Et super nivez de albabor' / Christe: 'Tenor': 'Et super niven' / Kyrie II: 'Tenor': 'De albabor' / Et in terra and Qui tollis: 'Tenor': 'Et super' / Et incarnatus: 'Tenor': 'Et super nivem' / Et in spiritum: 'Tenor': 'De albabor' / 'Tenor': 'Pleni tacet' / Agnus I-III: Double texted in [Superius], 'Contra'[tenor] and 'Contra'[tenor bassus] / Agnus II: [Superius]: 'Agnus ut supra'
