Source: PL-PŁsem MsEPl 12 Antyfonarz z Płocka, pars de sanctisFolio: 036rSequence: 4Feast: Cathedra PetriOffice: MGenre: VPosition: 01Cantus ID: a00701aMode: 5Full text: Exaltent eum in ecclesia plebis et in cathedra seniorum laudent eum