Apparuit angelus domini

Source: 
Firenze (Florence), Biblioteca Medicea-Laurenziana, Conv. sopp. 560
Folio: 
138r
Sequence: 
1
Feast: 
Marcellini, Petri
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
001456
Mode: 
1
Differentia: 
7
Differentia database: 
1--h-h-g-f-h-gfed--4 60a