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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

PDF Download • “Gloria III” Organ Accompaniment

Jeff Ostrowski · March 29, 2025

T IS SURELY one of music history’s great ironies. Dom André Mocquereau began his career utterly opposed to the mensuralist interpretation of Gregorian Chant, which was commonly used for singing from “corrupt” editions like the EDITIO MEDICAEA. But in the end, Dom Mocquereau ended up promoting a rhythmic interpretation sometimes called Neo-Mensuralism because it lengthens almost every other note. That interpretation had been explicitly condemned by Pope Pius X, and that legislation was reiterated by the Vatican for the next fifty years.1 But why did Dom Mocquereau do such a thing, after Pope Pius X fought so bravely for authentic sacred music? We can’t know for certain, but there are 3 basic theories: Three M’s. The first is Misunderstanding: Dom Mocquereau simply misinterpreted the ancient manuscripts. The second is Malice: Dom Mocquereau wanted to get even with Dom Pothier because he’d ardently wanted his 1903 edition adopted, but the pope chose Pothier’s edition instead. The third is Money: viz. the “financial imperatives” discovered in secret correspondence by Dr. Katharine Ellis of Cambridge University.

Jeff’s Attempt • So how does the “official rhythm” actually sound? Below, I demonstrate with one of the greatest versions of the Glória in excélsis—viz. GLORIA III.

*  PDF Download • ORGAN ACCOMPANIMENT
*  PDF Download • VOCALIST SCORE

Here’s the direct URL link.

We printed these congregational inserts and placed them inside the covers of the Saint Isaac Jogues Illuminated Missal, Gradual, and Lectionary.

Nothing Deficient • I have argued that we should sing the official melodies the way they were intended to be sung by the Vatican Commission on Gregorian Chant, which was responsible for creating the official edition. As far as I can tell, nobody has been able to demonstrate anything “deficient” or “lacking” or “undesirable” or “inadequate” about the official rhythm. A list of famous musicians who used the official rhythm would include: Flor Peeters; Father Xavier Mathias (who in 1913 founded the Saint Leo Institute for Sacred Music at Strasburg Cathedral); Professor Max Springer (student of Antonín Dvořák); Most Rev’d H. Laurent Janssens; Marcel Dupré; Monsignor Franz Nekes (called “The German Palestrina”); Alfons Desmet; Aloysius Desmet; Oscar De Puydt; Father Karl Weinmann; the Wiltberger brothers; Professor Amédée Gastoué; Abbat Urbanus Bomm; Charles-Marie Widor; Joseph Gogniat; Monsignor Jules Van Nuffel; Monsignor Jules Vyverman; Marinus de Jong; Gustaaf Nees; Henri Durieux; Edgard de Laet; Monsignor Johannes Overath; Monsignor Francis P. Schmitt; Dr. Karl Gustav Fellerer; and Dom Lucien David.

Seeking Feedback • I’d love to hear your thoughts on this matter. Surely I’m not the only one interested in the rhythm of plainsong! Feel free to tell me where I’ve gone astray—but if you do that please make sure to include specific examples.

1 I must admit that I’ve never understood why some priests and musicians—who are responsible for Mass according to the liturgical books of 1962—are so very careful about every last rubric pertaining to the ceremonies but totally ignore the musical legislation.

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

Filed Under: Articles, PDF Download Tagged With: Abbat Joseph Pothier, Andre Mocquereau Theory of Rhythm, Dom Lucien David Saint Wandrille Abbey, Gregorian Organ Accompaniments, Gregorian Rhythm Wars, Gregorian Semiology, Sémiologie grégorienne Last Updated: May 5, 2025

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About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Michigan. —(Read full biography).

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President’s Corner

    PDF Download • “Eb Organ Postlude”
    Gustav Adolf Merkel (d. 1885) was a German organist, teacher, and composer. Although a Lutheran himself, he held the appointment at the (Roman Catholic) Cathedral of Dresden from 1864 until his death. You can download his Organ Postlude in E-Flat, which I like very much. He has an interesting way of marking the pedal notes. What do you think?
    —Jeff Ostrowski
    Music List • (Palm Sunday, 2026)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for Palm Sunday—a.k.a. “Dominica in palmis de Passione Domini”—which is 29 March 2026. Please feel free to download it as a PDF file if such a thing interests you. The OFFERTORY (Impropérium exspectávit cor meum) is quite moving. Even though the COMMUNION ANTIPHON is relatively simple, the Fauxbourdon makes it sound outstanding.
    —Jeff Ostrowski
    Easter • Would You Sing This Hymn?
    He who examines Laudes Dei: a hymnal for Catholic congregations (St. Louis, 1894) will discover this pairing of a hymn for Easter. For the record, this isn’t the only Catholic hymn book to marry that text and melody; e.g. Saint Mark’s Hymnal for Use in the Roman Catholic Church in the United States (Peoria, 1910) does the same thing. Sometimes an unexpected pairing—chosen with sensitivity—can be superb, forcing singers to experience the text in a ‘fresh’ and wonderful way. On the other hand, we sometimes encounter something I’ve called “PERNICIOUS HYMN PAIRINGS.” If you find the subject in intriguing, feel free to peruse an article I published in May of 2023. As always, my email inbox is open if you have a bone to pick with my take.
    —Jeff Ostrowski

Quick Thoughts

    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski
    PDF Download • “Ubi Caritas” (SATB)
    I remember singing “Ubi Cáritas” by Maurice Duruflé at the conservatory. I was deeply moved by it. However, some feel Duruflé’s version isn’t suitable for small choirs since it’s written for 6 voices and the bass tessitura is quite low. That’s why I was absolutely thrilled to discover this “Ubi cáritas” (SATB) for smaller choirs by Énemond Moreau, who studied with OSCAR DEPUYDT (d. 1925), an orphan who became a towering figure of Catholic music. Depuydt’s students include: Flor Peeters (d. 1986); Monsignor Jules Van Nuffel (d. 1953); Arthur Meulemans (d. 1966); Monsignor Jules Vyverman (d. 1989); and Gustaaf Nees (d. 1965). Rehearsal videos for each individual voice await you at #19705. When I came across the astonishing English translation for “Ubi Cáritas” by Monsignor Ronald Knox—matching the Latin’s meter—I decided to add those lyrics as an option (for churches which have banned Latin). My wife and I made this recording to give you some idea how it sounds.
    —Jeff Ostrowski
    PDF Download • “Holy, Holy, Holy”
    For vigil Masses on Saturday (a.k.a. “anticipated” Masses) we use this simpler setting of the “Holy, Holy, Holy” by Monsignor Jules Vyverman (d. 1989), a Belgian priest, organist, composer, and music educator who ultimately succeeded another ‘Jules’ (CANON JULES VAN NUFFEL) as director of the Lemmensinstituut in Belgium. Although I could be wrong, my understanding is that the LEMMENSINSTITUUT eventually merged with “Catholic University of Leuven” (originally founded in 1425). That’s the university Fulton J. Sheen attended.
    —Jeff Ostrowski

Random Quote

“Who dreamed on that day that within a few years, far less than a decade, the Latin past of the Church would be all but expunged, that it would be reduced to a memory fading in the middle distance? The thought of it would have horrified us, but it seemed so far beyond the realm of the possible as to be ridiculous. So we laughed it off.”

— Most Rev’d Robert J. Dwyer, Archbishop of Portland (d. 1976)

Recent Posts

  • PDF Download • “Eb Organ Postlude”
  • Fulton J. Sheen • “24-Hour Catechism”
  • Music List • (Palm Sunday, 2026)
  • Easter • Would You Sing This Hymn?
  • “Priest Saying Mass” • Medieval Illumination

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