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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 • “Music List” (Sunday, 28 December)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Feast of the Holy Family of Jesus, Mary, & Joseph (28 Dec. 2025). If such a thing interests you, feel free to download it as a PDF file. The FAUXBOURDON verses for the Communion Antiphon are particularly gorgeous. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    PDF • “Music List” (Xmas Midnight Mass)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Christmas Midnight Mass (“Ad Missam In Nocte”). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is simple, but quite beautiful. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    PDF • “Music List” (4th Sunday of Advent)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for 21 December 2025, which is the 4th Sunday of Advent (Year A). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is the famous “Roráte Coeli” and the fauxbourdon setting of the COMMUNION is exquisite. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “In Paradisum” in English
    We always sing the IN PARADISUM in Latin, as printed on this PDF score. I have an appallingly bad memory (meaning I’d be a horrible witness in court). In any event, it’s been brought to my attention that 15 years ago I created this organ accompaniment for the famous and beautiful ‘IN PARADISUM’ Gregorian chant sung in English according to ‘MR3’ (Roman Missal, Third Edition). If anyone desires such a thing, feel free to download and print. Looking back, I wish I’d brought the TENOR and BASS voices into a unison (on B-Natural) for the word “welcome” on the second line.
    —Jeff Ostrowski
    What does this mean? “Pre-Urbanite”
    Something informed critics have frequently praised vis-à-vis the Saint Jean de Brébeuf Hymnal is its careful treatment of the ancient hymns vs. the “Urbanite” hymns. This topic I had believed to be fairly well understood—but I was wrong. The reason I thought people knew about it is simple; in the EDITIO VATICANA 1908 Graduale Romanum (as well as the 1913 Liber Antiphonarius) both versions are provided, right next to each other. You can see what I mean by examining this PDF file from the Roman Gradual of 1908. Most people still don’t understand that the Urbanite versions were never adopted by any priests or monks who sang the Divine Office each day. Switching would have required a massive amount of effort and money, because all the books would need to be changed.
    —Jeff Ostrowski
    PDF Download • “Santo Santo Santo”
    Those searching for a dignified, brief, simple, bright setting of SANCTUS in Spanish (“Santo Santo Santo”) are invited to download this Setting in honor of Saint John Brébeuf (organist & vocalist). I wonder if there would be any interest in me recording a rehearsal video for this piece.
    —Jeff Ostrowski

Random Quote

By far, the event that caused the biggest increase in requests for indults from the morning Mass requirement was the Second World War. The unusual requirements of providing Mass during wartime led to some unique legislation accommodating the time of Mass. Already in 1940, Pope Pius XII issued a motu proprio addressing the situation of holding Mass in countries where a “Black-out” had been ordered.

— Father Shawn P. Tunink

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