Openings: h4-h5 (ff. 40v-42r)
Voices: [Quatruplex], Triplex, Medius, Superior Contratenor, Tenor, Inferior Contratenor, Bassus
Compass: 23 notes
Cantus firmus: Libera nos salva nos: sixth psalm antiphon, Matins, Trinity Sunday; antiphon at memorials of the Holy Trinity
Text: see Texts: has tropes 1, 2 and 3
Edition: Musica Britannica 11, 1–11