Infantulus dum esset beatus

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
049v
Sequence: 
1
Feast: 
Silvestri
Office/Mass: 
L
Genre: 
A
Position: 
1
Cantus ID: 
003331
Mode: 
1
Differentia: 
3
Differentia database: 
1--h-h-g-f-gh-gf--4 69b