O Petre pastor summe et

Source: 
Cambridge, University Library, Mm.ii.9
Folio: 
455
Sequence: 
22
Feast: 
Petri, Pauli,8
Office/Mass: 
V
Genre: 
A
Position: 
R
Cantus ID: 
004053
Mode: 
1
Differentia: 
2
Differentia database: 
1--h-h-g-f-gh-gf--4 69b