Source: PL-WRu I F 416 Cistercian Gradual (Silesia)Folio: 011vSequence: 2Feast: Nativitas DominiOffice: MASSGenre: AllCantus ID: g00544Mode: 8Full text: Alleluia Dominus dixit ad me filius meus es tu ego hodie genui te
Cantus Planus in Polonia 