Petrus autem servabatur in

Source: 
Rouen, Bibliothèque municipale, 248 (olim A. 339)
Folio: 
039r
Sequence: 
3
Feast: 
Petri, Pauli
Office/Mass: 
M
Genre: 
A
Position: 
2.4
Cantus ID: 
004286
Mode: 
1
Differentia: 
G4
Differentia database: 
1--h-h-h-h-g-ghg--4 52c