Nisi diligenter perfeceris

Source: 
Tours, Bibliothèque municipale, 149
Folio: 
494v
Sequence: 
3
Feast: 
Agathae
Office/Mass: 
M
Genre: 
A
Position: 
3.3
Cantus ID: 
003881
Mode: 
7
Differentia: 
4b
Differentia database: 
1--l-l-lm-l-lk-ll--4 147aa