Extremely Rare! • Pages from the “Directorium Chori” (Solesmes Abbey, 1864)
The entire edition was destroyed in a fire (circa 1866) except four rare copies.
Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”