Source: PL-Wn 12722 V Graduał opata tynieckiego MścisławaFolio: 231vSequence: 2Feast: Nerei, AchilleiOffice: MASSGenre: InVCantus ID: g00188aMode: 3Differentia: A3Full text: Exsultate justi in domino rectos decet collaudatioExternal image link: Image link