In aeternum tu nos serva

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
050v
Sequence: 
4
Feast: 
Dom. per annum
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
003205
Mode: 
3
Differentia: 
G1
Differentia database: 
1--k-k-k-hk-h-g--4 92c
Extra: 
039v