Gratias ago deo meo quia

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
239v
Sequence: 
2
Feast: 
Laurentii
Office/Mass: 
M
Genre: 
A
Position: 
2.4
Cantus ID: 
202023
Mode: 
4
Differentia: 
1
Differentia database: 
1--h-g-h-jh-gfe-e--4 19b
Addendum: 
P: 349