Source: PL-PŁsem MsEPl 12 Antyfonarz z Płocka, pars de temporeFolio: 005wSequence: 2Feast: Nativitas DominiOffice: V2Genre: APosition: 3Cantus ID: 002794Mode: 7Differentia: A1Full text: Exortum est in tenebris lumen rectis corde misericors et miserator et justus dominusNotes: ps Beatus vir