Orietur*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
024v
Sequence: 
16
Feast: 
Octava Nat. Domini
Office/Mass: 
M
Genre: 
A
Position: 
1.6
Cantus ID: 
004194
Mode: 
*
Addendum: 
P: 049