Quando natus est ineffabili-

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
025r
Sequence: 
12
Feast: 
Octava Nat. Domini
Office/Mass: 
L
Genre: 
A
Position: 
2
Cantus ID: 
004441
Mode: 
3
Differentia: 
5a
Differentia database: 
1--k-k-kj-hj-hG-gh--4 102d
Addendum: 
P: 050