Petrus autem servabatur in

Source: 
Stuttgart, Württembergische Landesbibliothek, HB.I.55
Marginalia: 
7
Folio: 
111r
Sequence: 
4
Feast: 
Petri, Pauli
Office/Mass: 
M
Genre: 
A
Position: 
2.1
Cantus ID: 
004286
Mode: 
1
Differentia: 
aq
Differentia database: 
1--h-h-hg-gf-g-ghg--4 66b
Extra: 
aq