Elevamini portae aeternales et introibit

Source: 
The Poissy Antiphonal
Folio: 
042r
Sequence: 
1
Feast: 
Octava Nat. Domini
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
002631
Mode: 
5
Differentia: 
A1
Manuscript Reading Full Text (standardized spelling): 
Elevamini portae aeternales et introibit rex gloriae