Source: Missale notatum OlomucenseFolios: 178rFolio: 001rSequence: 1Full text (or incipit): Grates nunc omnesOffice: MASSGenre: SqRubrics: Sequencia in primo galli cantuFeast: Nativitas DominiCantus ID: ah53010Form: MImage link: https://imagines.manuscriptorium.com/loris/AIPDIG-VMO___R_59________3WLJRL4-cs/I…