Lux orta est super nos

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
016r
Sequence: 
9
Feast: 
Nativitas Domini
Office/Mass: 
P
Genre: 
A
Cantus ID: 
003652
Mode: 
1
Differentia: 
4
Differentia database: 
1--h-h-g-f-gf-d--4 74c
Addendum: 
P: 032