Laetentur caeli et exsultet

Source: 
Rome, Santa Sabina, XIV L1 ("Humbert" codex)
Folio: 
236v
Sequence: 
17
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
3.2
Cantus ID: 
003567
Mode: 
4
Differentia: 
A
Manuscript Reading Full Text (standardized spelling): 
Laetentur caeli et exsultet terra ante faciem domini quoniam venit