In tua justitia libera me

Source: 
Aachen (Aix-la-Chapelle), Domarchiv, G 20
Folio: 
053v
Sequence: 
1
Feast: 
Fer. 2 per annum
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
003300
Mode: 
5?
Finalis: 
B
Differentia: 
8.C1
Differentia database: 
1--k-k-h-k-l-k--4 99d
Extra: 
042v
Manuscript Reading Full Text (standardized spelling): 
In tua justitia libera me
Indexing notes: 
modal number assigned in MS=5, but given a mode 8 differentia with a B final (??)