Nisi diligenter perfeceris

Source: 
Arras, Bibliothèque municipale, 893 (olim 465)
Folio: 
343v
Sequence: 
1
Feast: 
Agathae
Office/Mass: 
L
Genre: 
A
Position: 
1
Cantus ID: 
003881
Mode: 
4
Differentia: 
1
Differentia database: 
1--h-g-h-j-g-e--4 27a