Biduanis ac triduanis

Source: 
Rouen, Bibliothèque municipale, 248 (olim A. 339)
Folio: 
121r
Sequence: 
12
Feast: 
Caeciliae
Office/Mass: 
M
Genre: 
A
Position: 
1.6
Cantus ID: 
200690
Mode: 
2
Differentia: 
D1
Differentia database: 
1--f-f-f-e-c-d--4 152b