Fac a patre benedici nos

Source: 
Istanbul, Topkapı Sarayı Müzesi, Deissmann 42
Folio: 
299r
Sequence: 
10
Feast: 
Mariae ad Nives
Office/Mass: 
L
Genre: 
A
Position: 
4
Cantus ID: 
206001
Mode: 
4
Differentia: 
E1
Differentia database: 
1--h-g-h-k-g-e--4 41a