Repeating Repertoire? • Dr. Hamilton
Psalm 51 occurs a dozen times in the lectionary during the year, for such diverse days such as St. Thomas Aquinas, weekdays during ordinary Time, many days in Lent, and the Easter Vigil.
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.”