Orietur in diebus domini

Source: 
Città del Vaticano (Roma), Biblioteca Apostolica Vaticana, Cappella Sistina 27
Folio: 
086r
Sequence: 
1
Feast: 
Nativitas Domini
Office/Mass: 
M
Genre: 
A
Position: 
2.2
Cantus ID: 
004194
Mode: 
8
Differentia: 
2
Differentia database: 
1--k-k-h-k-l-k--4 99d