Credidi propter quod locutus

Folio: 
054r
Sequence: 
14
Office/Mass: 
V2
Genre: 
A
Position: 
2
Cantus ID: 
001944
Mode: 
1?
Finalis: 
B
Differentia-Old: 
?
Extra: 
043r
Indexing notes: 
mode number is not clear (is it 1?) - antiphon ends on B - is the differentia "C-C"?