Laetabitur*

Source: 
Wien, Österreichische Nationalbibliothek - Musiksammlung, 1890
Marginalia: 
B
Folio: 
203r
Sequence: 
25
Feast: 
Joannis Port. Lat.
Office/Mass: 
M
Genre: 
R
Position: 
1.2
Cantus ID: 
007064
Mode: 
*
Manuscript Reading Full Text (standardized spelling): 
Laetabitur*
Manuscript Reading Full Text (MS spelling): 
Letabitur
Indexing notes: 
uncertain about incipit