Ecce venit rex occurramus

Source: 
Dubrovnik, Franjevački Samostan (Franciscan Monastery), Cod. C Nr. 4
Folio: 
124
Sequence: 
1
Feast: 
Dom. 4 Adventus
Office/Mass: 
M
Genre: 
I
Cantus ID: 
001074
Mode: 
4
Differentia: 
BL
Indexing notes: 
Why is the 4th Sunday AFTER the chants for the 4th week?;