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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.”

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Views from the Choir Loft

Theodore Marier Is the Most Important Liturgical Musician—Even Today.

Richard J. Clark · July 26, 2023

BELIEVE that Dr. Theodore Marier is even today the most important liturgical musician in the English Speaking world, despite a life in relative obscurity and service. Few know his name. Yet, his influence and importance certainly surpass postconciliar giants like Richard Proulx and Alexander Peloquin, whose work live on today. And his liturgical works are in greater demand today than when they were composed. My assertion specifies the parameter “most important liturgical musician”—one who worked in a parish with parish choirs in addition to being a composer, scholar, and editor of hymnals. Certainly, Pope Saint Pius X is the most important figure in liturgical music of the Twentieth and Twenty-first Centuries; he is referred to by name twice in SACROSANCTUM CONCILIUM for having “explained more precisely the ministerial function supplied by sacred music in the service of the Lord.” (S. C. §42). Pope Benedict XVI certainly looms as a most prominent figure in the Twenty-first Century. But a liturgical musician working in the trenches to implement Vatican II? Undoubtedly Theodore Marier.

My Presentation • The following presentation was given at the Sacred Music Symposium in California. It was the closing event of a glorious week of sacred music and prayer.

EW KNOW Marier’s work. He was not an international figure as a composer of concert works, although he traveled in circles that included Olivier Messiaen, Jean Langlais, Dom Joseph Gajard of the Solesmes Abbey, Seizi Ozawa, Kurt Masur, and others. His liturgical compositions, influence, and guidance throughout the Twentieth Century and the Conciliar changes are exceedingly important today in the Twenty-first Century especially in light of Pope Francis’ motu proprio, Traditionis custodes. Regardless, his influence stands on its own. Marier is best known as the founder of the Saint Paul’s Choir School (Archdiocesan Choir School) in Cambridge, Massachusetts and as the editor of the landmark hymnal, Hymns Psalms and Spiritual Canticles (1974, 1983) which modeled the sung Mass in the brand new Novus Ordo. His Psalter will be that hymnal’s most lasting contribution. (Listen here to the Boston Cathedral Choir sing Marier’s Psalm 128.) The founding of the school in 1963 (an extraordinary year in the Church!) was to him the natural conclusion of the liturgical documents put forth by Popes Pius X, Pius XI, and Pius XII, and ultimately Vatican II. He took these liturgical directives to heart and acted upon them. He demanded excellence not only from his students, but from the institution he founded.

Marier’s Qualities • His postconciliar liturgical compositions addressed the desperate need for sacred music in the vernacular that was required overnight. His compositions were deeply steeped in Gregorian Chant and demonstrate the continuity of the old rite and the new in a manner that was not only accessible, but beautiful, sacred, and universal. He was the model of a servant leader and servant composer. He spent his life building bridges. He began preparing those bridges in the 1940s with longtime Saint Paul’s pastor, Msgr. Augustine Hickey long before Vatican II. He built bridges during Vatican II (listen here to his Lux Aeterna in English recorded in 1965!) and in the years after Vatican II until his death in 2001. He always built a bridge out of love for God and the faithful. He was a man of deep faith, a loving husband, father, and family man. All of this made him a better liturgical musician.

Personal Takeaway:

I never met Theodore Marier. I did not grow up in New England. However, I have met countless souls whose lives have been changed forever by him. For someone I never met, he has had the most profound influence on my career. Whether one uses his compositions or not—they will have to stand on their own merits—I have one final personal conclusion: The more I learn about Marier, his life and career, the more I am inspired to be a better human being.

Acknowledgments:

This presentation is just a small offering, giving an overview which I hope others can build upon. I wish to extend profuse thanks to Dr. William H. Atwood, Diocesan Director of Music for the Diocese of Bridgeport Connecticut for his dissertation The Influence of Plainchant on the liturgical Music of Theodore Marier. I also wish to thank William Endicott, Class of 2008, for his thesis, Repleatur Os Meum Laude Tua, A History of the Music and Mission of the St. Paul’s Choir School and for supplying recordings and scores. I also wish to thank Br. Paul J. Murray, Class of 1996, for his tireless editorial work on Marier’s compositions. Finally, I wish to thank the late John Dunn (1943-2022), Headmaster & Director of Music Emeritus, Saint Paul’s Choir School for his painstaking editorial updates of Marier’s psalter—a true labor of love—and generous sharing of institutional knowledge.

Soli Deo gloria

Oremus pro invicem.
Let us pray for each other.

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Tagged With: Dr Theodore Marier Last Updated: January 13, 2024

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About Richard J. Clark

Richard J. Clark is the Director of Music of the Archdiocese of Boston and the Cathedral of the Holy Cross.—(Read full biography).

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

Had the Church never spoken on this matter, it would still be repugnant to our Catholic people’s sense of what is fit and proper in the holiest of places, that a priest should have to struggle through the prayers of the Holy Mass, because of such tunes as “Alice, where art thou?” the “Vacant Chair,” and others of more vulgar title, which, through the carelessness or bad judgment of organists, sometimes find their way into our choirs.

— Preface to a Roman Catholic Hymnal (1896)

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