O magnum mysterium et

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
014r
Sequence: 
4
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
R
Position: 
1.3
Cantus ID: 
007274
Mode: 
3
Addendum: 
P: 028