Laeti concinite Stephani

Source: 
Sankt Gallen, Stiftsbibliothek, 390
Marginalia: 
R
Folio: 
192
Sequence: 
8
Feast: 
Additamenta
Office/Mass: 
X
Genre: 
A
Cantus ID: 
206504
Mode: 
?
Differentia: 
*
Manuscript Reading Full Text (standardized spelling): 
Laeti concinite Stephani
Manuscript Reading Full Text (MS spelling): 
Leti concinite stephani
Indexing notes: 
In email correspondence (22 Jan 2008), Michel Huglo thinks this is an antiphon;