Unus est enim magister vester

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
072r
Sequence: 
8
Feast: 
Fer. 3 Hebd. 2 Quad.
Office/Mass: 
E
Genre: 
A
Position: 
2
Cantus ID: 
005278
Mode: 
1
Differentia: 
D1a
Differentia database: 
1--h-h-g-f-h-gfd--4 58a
Extra: 
061r