Appropinquabat autem dies

Source: 
Istanbul, Topkapı Sarayı Müzesi, Deissmann 42
Folio: 
077r
Sequence: 
18
Feast: 
Fer. 6 de Passione
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
001465
Mode: 
1
Differentia: 
G2
Differentia database: 
1--h-h-hg-gf-gh-g--4 66r