Lux orta est super nos

Source: 
Praha (Prague), Strahovská knihovna (Library of the Royal Canonry of Premonstratensians at Strahov), DE I 7
Folio: 
020v
Sequence: 
5
Feast: 
Nativitas Domini
Office/Mass: 
P
Genre: 
A
Cantus ID: 
003652
Mode: 
2
Differentia: 
D1
Differentia database: 
1--f-f-f-f-cd-d--4 150e
Manuscript Reading Full Text (standardized spelling): 
Lux orta est super nos quia hodie natus est salvator alleluia