Saule quid persequeris martyrem meum

Folio: 
058
Sequence: 
3
Feast: 
Office/Mass: 
M
Genre: 
A
Position: 
3.
Cantus ID: 
004822
Mode: 
1
Differentia: 
ag
Manuscript Reading Full Text (standardized spelling): 
Saule quid persequeris martyrem meum Stephanum ego te faciam servum meum
Manuscript Reading Full Text (MS spelling): 
Saule quid persequeris martyrem meum stephanum ego te faciam servum meum
Indexing notes: 
is the g of the differentia original?