O admirabile indicium

Source: 
Benevento, Archivio Capitolare, V 20
Folio: 
205r
Sequence: 
1
Feast: 
Joannis, Pauli
Office/Mass: 
V2
Genre: 
A
Position: 
M
Cantus ID: 
003987
Mode: 
2
Differentia: 
2
Differentia database: 
1--f-f-ed-fe-cd-d--4 156b