In principio et ante saecula

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
014v
Sequence: 
5
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
2.5
Cantus ID: 
003273
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a
Addendum: 
P: 029