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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

Gregorian Chant • “Its True & Authentic Rhythm”

Jeff Ostrowski · April 1, 2022

HE SCHEDULE OF EVENTS for this year’s Sacred Music Symposium has not yet been released. It’s still being “adjusted” based upon the participants’ desires. This year, I’m considering giving a talk about the rhythm of plainsong. If I decide to give such a talk, the following questions will be addressed: (1) Can we know with certainty that our current plainsong performances correspond—generally speaking—to the way plainsong has always been sung? (2) Is it verifiably true that singing from adiastematic notation is “better” than diastematic notation? (3) What can we know with certainty about adiastematic rhythm? (4) Does following the official rhythm of the Church lead to the most beautiful performance of plainsong? (5) When it comes to plainsong rhythm, should we seek advice from those who have never stood in front of a choir in real life? (6) With regard to plainsong, should we seek advice from “scholars” whose recordings don’t sound beautiful?

Embracing The Official Rhythm: For more than two decades, I have been studying ancient manuscripts. Over the last two years I have examined the ancient MSS with greater attention than ever before (on account of a project I was involved with). As a result, I have decided to abandon the rhythmic markings of Dom Mocquereau—which often distort the melody—even though I have sung from these markings since the 1990s. My decision is based partially upon study of the ancient MSS, but it’s also based upon directing choirs for a long time. I have decided to embrace the official rhythm of plainsong: viz. “pure” Editio Vaticana. Technically, this is the only system allowed by the Church documents. Any doubt about this was swept away by the “Martinelli Letter” (02/18/1910). Abbat Pothier’s “De Caetero” letter (1906) also makes this clear. (It will be remembered that Abbat Pothier was chosen by Pope Pius X to create the Editio Vaticana.) Five decades later, a document by Pope Pius XII, De musica sacra et sacra liturgia (1958), in paragraph §59b stubbornly upheld the earlier decrees with regard to editions which modify 1 the official rhythm of the Editio Vaticana. We are starting each week with the Introit, and here’s how the “pure” Editio Vaticana scores look:

*  PDF Download • INTROIT (Passion Sunday)
—Introit with “pure” Vaticana rhythm (official edition).

Here’s how the very somber “Passion Sunday” Introit sounds when sung according to the official rhythm:

Melismatic Mora Vocis: In the Introit for this coming Sunday (Passion Sunday), there’s only one melismatic mora vocis (“MMV”) singers must be aware of. In the score I placed a little arrow above it. The official edition, printed by the Vatican Press, doesn’t provide any help; the singers must watch carefully for a “white note” or “blank space equal to a notehead”—and that’s where the MMV goes:

Numerous Editions: The Editio Vaticana was reproduced by many publishers exactly identical to the Vatican Press version. I’m talking about editions published by Pustet, Mechlin, Schwann, Weinmann, and so forth. But in 1954, the editors of the Schwann (Abbat Bomm, K.G. Fellerer, and Msgr. Overath) thought the singers needed a little help. Therefore, they placed a little line underneath, to help the singer. The blue arrow shows the “melismatic mora” and the red arrow shows an editorial mark by the Schwann editors reminding you to elongate the note:

Schwann’s modern notation version also indicates the MMV:

Flor Peeter’s Edition: The edition by Flor Peeters, which follows the “pure” Editio Vaticana, indicates the MMV as we would expect:

Max Springer’s Edition: The edition by Max Springer of Beuron Abbey, produced circa 1910, observes the MMV just as one would expect:

Saint Leo Edition: Father Franz Xaver Mathias (an Alsatian priest and organist) founded the SAINT LEO INSTITUTE FOR SACRED MUSIC in 1913. His edition follows the “pure” Editio Vaticana and indicates the MMV as we would expect. However, Father Mathias indicates some additional elongations, which I don’t understand—and I marked these with blue arrows. It’s possible he couldn’t get the 1883 edition out of his head (on this, see below).

The organ accompaniment by Father Mathias matches, just as one would expect:

Dom Mocquereau’s Edition: The 1903 Liber Usualis was the crowning achievement of Dom Mocquereau, who desperately wanted it to be adopted by Pope Pius X. However, because of Dom Mocquereau’s “intransigence,” the pope chose Abbat Pothier’s edition instead. For this, Mocquereau never forgave Pothier. In any event, the edition by Dom Mocquereau has an elogation there:

14th Century: A manuscript from approximately 1385AD does not indicate an MMV—but that doesn’t necessarily come as a surprise:

Precursor To The Vatican Edition: The 1883 edition by Pothier does not correspond to the 1908 Editio Vaticana. That means Abbat Pothier must have changed his mind in 1908:

For the record, it seems that Abbat Pothier changed his mind about a lot of things in 1908, as this chart shows:

*  PDF Download • COMPARISON CHART
—1876 (Hermesdorff); 1883 (Pothier); 1903 (Mocquereau); 1908 (Vaticana).

 


NOTES FROM THIS ARTICLE:

1   On 14 August 1905, the Vatican under Pope Pius X declared: “The Sacred Congregation of Rites declares and decrees that this same edition [Abbot Pothier’s Editio Vaticana] be considered by all as typical, in such wise that henceforth the Gregorian melodies contained in future editions of these books be perfectly conformed, without any addition, subtraction, or change whatsoever [nihil prorsus addito, dempto vel mutato] to the aforesaid typical edition, even in the case of extracts made from these books.”

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

Filed Under: Articles, Featured Tagged With: Abbat Urbanus Johann Bomm, Dom Josef Pothier, Dom Mocquereau, Editio Vaticana, Karl Gustav Fellerer, melismatic morae vocis, Monsignor Johannes Overath Last Updated: April 4, 2022

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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 • (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

“Much more serious was the problem, what to do about ‘thou’ and ‘you.’ I confess I would have liked to go the whole hog, and dispense with the use of ‘thou’ and ‘thee’, even where the Almighty was being addressed. They do these things in France, but I felt sure you could not get it past the British public. Why not, then, have ‘thou’ for God and ‘you’ for man? That is Moffatt’s principle; but it seems to me to break down hopelessly in relation to our Incarnate Lord…”

— Monsignor Ronald A. Knox

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