Feast: Commune Apostolorum extra T.P.
Office_part: in
Cantus ID: 001125
Status: SELECTED
Oriscus without episema in the initial formula: cf. Q5F6I, A3F1I and other Regem...(festivus) II/
Added synthetic NABC based on A3F1I (itself synthetic: this type of I/ is not present in H)
Typo