Haec est virgo*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
200r
Sequence: 
2
Feast: 
Brigidae
Office/Mass: 
L
Genre: 
A
Position: 
R
Cantus ID: 
003006
Mode: 
*
Addendum: 
P: 268