Maria autem conservabat*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
024r
Sequence: 
22
Feast: 
Die 7 p. Nat. Domini
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
003696
Mode: 
*
Addendum: 
P: 048