Dei genetrix virgo semper

Source: 
Cambridge, University Library, Mm.ii.9
Folio: 
518
Sequence: 
11
Feast: 
Nativitas Mariae
Office/Mass: 
V
Genre: 
A
Position: 
1
Cantus ID: 
002142
Mode: 
1
Differentia: 
5
Differentia database: 
1--h-h-g-f-g-gfed--4 75d
Extra: 
1