Source: SK-BRnm (Bratislava) Slovenské národné múzeum - Hudobné múzeum GradualeFolio: 067vSequence: 2Full text: Priusquam montes fierent aut formaretur terra et orbisFeast: Fer. 3 Hebd. 1 Quad.Office: MASSGenre: InVPosition: 01Cantus ID: g00696a.1Mode: 5