Nativitas est hodie sanctae

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
247v
Sequence: 
12
Feast: 
Nativitas Mariae
Office/Mass: 
M
Genre: 
A
Position: 
2.1
Cantus ID: 
003848
Mode: 
7
Differentia: 
1
Differentia database: 
1--l-l-m-l-k-j--4 142a
Addendum: 
P: 365