A saeculo non est auditum

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
052v
Sequence: 
2
Feast: 
Fer. 4 Hebd. 4 Quad.
Office/Mass: 
V2
Genre: 
A
Position: 
M
Cantus ID: 
200028
Mode: 
4T
Differentia: 
3
Differentia database: 
1--l-k-l-m-k-h--4 T27aA
Addendum: 
P: 105