Source: SK-BRnm (Bratislava) Slovenské národné múzeum - Hudobné múzeum GradualeFolio: 152vSequence: 2Full text: Ne avertas faciem tuam a puero tuo quoniam tribulor velociter exaudi meFeast: Fer. 4 Maj. Hebd.Office: MASSGenre: GrCantus ID: g00874