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Corpus Christi Watershed

Jesus said to them: “I have come into this world so that a sentence may fall upon it, that those who are blind should see, and those who see should become blind. If you were blind, you would not be guilty. It is because you protest, ‘We can see clearly,’ that you cannot be rid of your guilt.”

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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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Corpus Christi Watershed

President’s Corner

    “Music List” • 5th Sunday of Easter (Year C)
    Some have expressed interest in perusing the ORDER OF MUSIC I prepared for the 5th Sunday of Easter (18 May 2025). If such a thing interests you, feel free to download it as a PDF file. The Communion Antiphon was ‘restored’ the 1970 Missale Romanum (a.k.a. MISSALE RECENS) from an obscure martyr’s feast. Our choir is on break this Sunday, so the selections are relatively simple in nature.
    —Jeff Ostrowski
    Communion Chant (5th Sunday of Easter)
    This coming Sunday—18 May 2025—is the 5th Sunday of Easter, Year C (MISSALE RECENS). The COMMUNION ANTIPHON “Ego Sum Vitis Vera” assigned by the Church is rather interesting, because it comes from a rare martyr’s feast: viz. Saint Vitalis of Milan. It was never part of the EDITIO VATICANA, which is the still the Church’s official edition. As a result, the musical notation had to be printed in the Ordo Cantus Missae, which appeared in 1970.
    —Jeff Ostrowski
    “Music List” • 4th Sunday of Easter (Year C)
    Some have expressed interest in perusing the ORDER OF MUSIC I prepared for the 4th Sunday of Easter (11 May 2025). If such a thing interests you, feel free to download it as a PDF file. I don’t know a more gorgeous ENTRANCE CHANT than the one given there: Misericórdia Dómini Plena Est Terra.
    —Jeff Ostrowski

Quick Thoughts

    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed
    When to Sit, Stand and Kneel like it’s 1962
    There are lots of different guides to postures for Mass, but I couldn’t find one which matched our local Latin Mass, so I made this one: sit-stand-kneel-crop
    —Veronica Brandt
    The Funeral Rites of the Graduale Romanum
    Lately I have been paging through the 1974 Graduale Romanum (see p. 678 ff.) and have been fascinated by the funeral rites found therein, especially the simply-beautiful Psalmody that is appointed for all the different occasions before and after the funeral Mass: at the vigil/wake, at the house of the deceased, processing to the church, at the church, processing to the cemetery, and at the cemetery. Would that this “stational Psalmody” of the Novus Ordo funeral rites saw wider usage! If you or anyone you know have ever used it, please do let me know.
    —Daniel Tucker

Random Quote

“Been to Catholic church and heard Mass. Execrable music! Organ played by a young girl who made impossible harmonies. Sermon very long. The preacher screamed loud enough to tire his lungs. The congregation was affected.”

— Louis Moreau Gottschalk (8 May 1864)

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  • “Music List” • 5th Sunday of Easter (Year C)
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