Source: PL-Wn 12720 V Antyfonarz opata Mścisława z Tyńca, pars de temporeFolio: 0057vSequence: 2Feast: Nativitas Domini,8Office: EGenre: ACantus ID: 004221Mode: 8Differentia: G1Full text: Parvulus filius hodie natus est nobis et vocabitur deus fortis alleluia alleluia