Hoc est testimonium quod

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
011v
Sequence: 
9
Feast: 
Sabbato Hebd. 4 Adv.
Office/Mass: 
L
Genre: 
A
Position: 
3B
Cantus ID: 
003082
Mode: 
1
Differentia: 
3
Differentia database: 
1--h-h-g-f-gh-gf--4 69b