Edition based on BerlS 40021 (inventory to appear)

Pre-existent material: Une mousse de biscaie, monophonic chanson treated as scaffolding cantus firmus usually in Tenor

ParisBNF 12744, ff. 5v-6r

Editorially supplied material: Plainchant intonation of Gloria supplied from Paris, Bibliothèque nationale, MS lat. 14452, f. 136v (Gradual of St. Victor of Paris, 13th century)