Source: SK-BRsa (Bratislava) Slovenský národný archív - Graduale NitriensisFolio: 111rSequence: 4Full text: Alleluia tu puer propheta altissimi vocaberis praeibis ante dominum parare vias ejusFeast: Joannis BaptistaeOffice: MASSGenre: AlCantus ID: g00242