Hoc est testimonium quod

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
020r
Sequence: 
2
Feast: 
Fer. 6 Hebd. 3 Adv.
Office/Mass: 
E
Genre: 
A
Position: 
2
Cantus ID: 
003082
Mode: 
1
Differentia: 
G1a
Differentia database: 
1--h-h-g-f-gh-gg--4 66i
Extra: 
009r