Hoc est testimonium quod

Source: 
Tongeren, Onze-Lieve-Vrouw-Kerk (Our Lady's Church), 64 (olim IV)
Folio: 
028r
Sequence: 
4
Feast: 
Hebd. 4 Adventus
Office/Mass: 
L
Genre: 
A
Position: 
1B
Cantus ID: 
003082
Mode: 
1
Differentia: 
G2
Differentia database: 
1--h-h-g-f-g-g--4 63a