Nativitas tua dei genetrix

Source: 
Paris, Bibliothèque nationale de France - Département des Manuscrits, Latin 1085
Folio: 
086r
Sequence: 
11
Feast: 
Nativitas Mariae
Office/Mass: 
M
Genre: 
A
Position: 
1.6
Cantus ID: 
003851
Mode: 
7
Differentia: 
*