Source: Missale Ordinis PraedicatorumSiglum: CZ-Pn XIII C 18Folios: 141rFolio: 141rSequence: 1Full text (or incipit): Iubilemus in hac dieGenre: SqRubrics: Item aliaFeast: De BMVFeast (text): Comm. BMVCantus ID: ah54284Form: T