The incorporation of Anglican hymnody into English-language Catholic worship is one of the great blessings of the past 50 years. And within that noble musical patrimony, Ralph Vaughan Williams surely holds pride of place among modern composers. Well do I remember the summer day in 1965 when I heard a massed chorus of men and women under the direction of my old choirmaster, Robert Twynham, rock the Baltimore Civic Center with all eight verses of Vaughan Williams’s masterpiece, “For All the Saints,” the processional hymn at the opening Mass of what used to be known as a “Liturgical Week.” It was stirring beyond words. And if a retrospective look at the program of lectures and seminars that followed reveals hints of choppy waters ahead in implementing the liturgical reforms mandated by the Second Vatican Council, the bright memory of that great hymn being sung by thousands of voices nonetheless lingers, and without alloy.