Felix namque es sacra virgo

Source: 
Cambrai, Bibliothèque municipale, Impr. XVI C 4
Folio: 
170v
Sequence: 
3
Feast: 
Nativitas Mariae
Office/Mass: 
V
Genre: 
A
Position: 
M
Cantus ID: 
002861
Mode: 
6T
Differentia: 
1
Differentia database: 
1--m-m-k-lm-l-k--4 T7aA