In ferventis*

Source: 
Wien, Österreichische Nationalbibliothek - Musiksammlung, 1890
Marginalia: 
B
Folio: 
203r
Sequence: 
20
Feast: 
Joannis Port. Lat.
Office/Mass: 
V
Genre: 
A
Position: 
M
Cantus ID: 
003234
Mode: 
*
Manuscript Reading Full Text (standardized spelling): 
In ferventis*
Manuscript Reading Full Text (MS spelling): 
In ferventis