Solve jubente deo terrarum Petre

Source: 
Vercelli, Biblioteca Capitolare, CLXX
Folio: 
115v
Sequence: 
11
Feast: 
Cathedra Petri
Office/Mass: 
V
Genre: 
A
Position: 
5
Cantus ID: 
004981
Mode: 
4
Differentia: 
E2
Differentia database: 
1--h-g-h-jh-gfe-e--4 19b
Manuscript Reading Full Text (standardized spelling): 
Solve jubente deo terrarum Petre catenas qui facis ut pateant caelestia regna beatis