O beata infantia per quam

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
015v
Sequence: 
5
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
P
Cantus ID: 
003994
Mode: 
2
Differentia: 
*
Addendum: 
P: 031