Openings: f4-f6 (ff. 26v-29r)
Voices: nine, corresponding to the angelic orders:
Quatruplex-Seraphyn | Triplex-Cherubyn | Medius-Troni |
Primus Contratenor-Dominaciones | Secundus Contratenor-Principatus | Tenor-Potestates |
Inferior Contratenor-Virtutes | Secundus Bassus-Archangeli | Primus Bassus-Angeli |
Compass: 23 notes
Cantus firmus: Assumpta est maria: first psalm antiphon, Lauds, Assumption (15 August)
Text: see Texts: has tropes 1, 2 and 3
Edition: Musica Britannica 10, 90–100