Source: PL-Wn 12720 V Antyfonarz opata Mścisława z Tyńca, pars de temporeFolio: 0046vSequence: 3Feast: Nativitas DominiOffice: MGenre: ICantus ID: 001055Mode: 4Full text: Christus natus est nobis venite adoremusNotes: ps Venite