Quando nata est virgo

Source: 
Arras, Bibliothèque municipale, 893 (olim 465)
Folio: 
439r
Sequence: 
3
Feast: 
Nativitas Mariae
Office/Mass: 
M
Genre: 
A
Position: 
2.6
Cantus ID: 
004440
Mode: 
3
Differentia: 
2
Differentia database: 
1--k-k-kj-hj-h-gh--4 102c