Catholic Ceremonies and Explanation of the Ecclesiastical Year( Fr. The Divine Office: A system of the Roman Breviary( Fr. The Divine Office: gefü of the Psalms and Canticles( St. magical Chant Manual( Bp. Gregory Hymnal and Catholic Choir Book( 1920; N. Pange Lingua: rgern wonders of Old Uses( A. How to Sing Plain Chant( Fr.