Source: Prácheňský graduál (Manuscriptorium: "Prácheňský kancionál")Siglum: CZ-HORm Sg 487Folios: 155vFolio: 155vSequence: 1Full text (or incipit): Congaudent angelorum choriGenre: SqRubrics: Assumpcionis beate virginisFeast: Assumptio MariaeFeast (text): Assumptio MariaeCantus ID: ah53104Form: M