Dum sacrum mysterium cerneret

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
254v
Sequence: 
11
Feast: 
Michaelis
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
002469
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a