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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

Abbat Bourigaud Challenges Dr. Charles Weaver!

Jeff Ostrowski · February 2, 2024

OR FIFTEEN YEARS—years of crucial importance to the restoration of Carmen Gregorianum—the monks of Solesmes Abbey weren’t allowed to set foot inside their monastery due to increasingly immoral anti-clerical laws in France. Specifically, the monks were kicked out in 1880 and returned on 25 August 1895. (Later on, they would be exiled to England for 20 years.) We have already discussed this “exile” situation at length. For the time being, it is only necessary to understand that for fifteen years (1880-1895) the monks of Solesmes lived inside houses in the town of Solesmes “at the very doors of the Abbey” as Dom Pierre Combe describes it. DR. KATHARINE ELLIS of Cambridge, in her fabulous and ‘Kathartic’ book (The Politics of Plainchant in fin-de-siècle France, 2013), describes the first exile as “fifteen years dispersed in houses within the village” [Ellis p56]. How DOM JOSEPH POTHIER was able to (somehow) single-handedly restore the entire repertoire of Gregorian chant while wandering around the town begging people to let him live there has never been explained by anyone; it’s a miracle.

Dom Bourigaud • Abbat Joseph Bourigaud (d. 1906) at the end of 1892 asked the abbat of Solesmes whether Dom Pothier could be transferred to Ligugé Abbey, since its prior had died. On 10 April 1893, Dom Pothier arrived at Ligugé Abbey to serve as prior. Years later, when Father Angelo De Santi was explaining to Pope Pius X why he believed Dom Mocquereau’s rhythmic theories were “wrong” [Ellis p91], De Santi also opined that “Solesmes had rid themselves of Pothier by giving him an abbey”—to which Pope Pius X responded that it amounted to “a small compensation” [c’était une petite compensation]. For those who don’t know Father Angelo De Santi, he was responsible for ghost-writing the 1903 motu proprio INTER PASTORALIS OFFICII (a.k.a. “Tra Le Sollecitudini”).

Auguste Pécoul • Auguste Pécoul (1837–1916) had been a monk of Solesmes under Dom Guéranger. Even after he was forced to leave the community on account of family circumstances, was still regarded by Abbat Guéranger “as a son” [Ellis p52]. According to Dr. Ellis, the rhythmic modifications of Dom Mocquereau became Pécoul’s bête noires (i.e. things for which he had a particular hatred). Pécoul called them “parasites” or “microbes.” Today, I will speak about these rhythmic signs. Since the 1990s, I faithfully sang from the books containing Dom Mocquereau’s modifications to the official rhythm. For a variety of reasons, I eventually abandoned those “parasites,” adopting instead the official rhythm promulgated in 1905 by my confirmation saint, POPE SAINT PIUS X.

Too Much Repeating • My arguments (from the past) are available for anyone who wants to consult them. I will not repeat them here. Briefly, however, I believe Dom Mocquereau’s rhythmic modifications: (1) distort and disfigure the melodic line; (2) are needlessly esoteric and confusing for those trying to pray by singing; (3) were condemned explicitly over and over again, including by Pope Saint Pius X; (4) contradict the official rhythm in thousands of instances, adding confusion; (5) ignore the evidence from thousands of important ancient manuscripts; (6) misinterpret what the ancient manuscripts say.

DR. KATHARINE ELLIS agrees with me:

The scientific drive for statistical proof that characterizes Mocquereau’s work on pitch contour is replaced, in his work on rhythm and interpretation, by extrapolation from a minute body of comparative evidence and the making of creative leaps in its analysis. Dom Mocquereau provides no equivalent, for rhythm, of the huge body of raw data used in the Paléographie musicale to demonstrate Gregorian melodic unity via Justus ut palma. He cannot. Instead he does the opposite: he elaborates an aesthetically based theory of interpretation which he presents—distilled via carefully selected examples—as both general and normative.

Not Much Success • Over years, various Gregorian scholars, members of ‘traditional’ orders, and even seminary professors have written to us, saying they’d like to write articles defending Dom Mocquereau (or the so-called “semiology” of Dom Cardine). For reasons I don’t fully understand, most of them never followed through; perhaps they are occupied with other matters. I hope they’ll do what they promised and send us those articles. I suppose “only time will tell.” We encourage different points of view. Indeed, I’ve been examining ancient manuscripts for more than twenty years, and I’m always happy to learn more. I have a lot to learn!

Dr. Charles Weaver • One scholar who has defended Dom Mocquereau is my friend and colleague Dr. Charles Weaver. Often, Dr. Weaver has said something akin to the following (if I misquote him, I hope he’ll correct me):

“While the rhythmic method of Dom Mocquereau does include elongations (and eliminates elongations in the official edition) that’s not really the important part about his method. Even if we were to forget about all the horizontal episemata, it really wouldn’t make much difference.”

A Challenge For Dr. Weaver:

If I’ve quoted him correctly—and I believe I did—I would like to “invite” or “request” or “provoke” or “challenge” Dr. Weaver to further explain what he means. Consider the following antiphon (Tecum princípium) from Christmas. Here’s how it appears in the 1924 LIBER USUALIS, with rhythmic markings by Dom Mocquereau:

Now consider how it appears in the official edition, as interpreted by The German School. Notice how it doesn’t contain any “parasites,” to use the phrase by Abbat Guéranger’s spiritual son:

Abbat Bourigaud • Just as Dom Mocquereau created his own version of the official edition, which radically changed the rhythm, let’s suppose Abbat Joseph Bourigaud had done the same thing. Let’s pretend that Abbat Bourigaud added “parasites” to his version, supposedly based upon “a minute body of comparative evidence” (to use the words of Dr. Ellis):

Hypothetical • As I’ve mentioned twice already, the final scenario is a make-believe. Therefore, I could have chosen any name. But since Abbat Bourigaud was the one who brought Dom Pothier to Ligugé, it seemed appropriate to use his name. The point I am trying to make is: what if others had dared to make the same type of modifications Dom Mocquereau did? In other words, what if all the other editors had added thousands of “parasites” (to use the term of Dom Guéranger’s spiritual son)?

Summary:

My question for Dr. Weaver is simple. If half the singers used the edition by Dom Mocquereau, and the other half used the edition by Abbat Bourigaud, can we really say the rhythmic symbols are insignificant? Can you imagine how horrible that would sound?

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

Filed Under: Articles Tagged With: Abbat Prosper Guéranger, Auguste Pécoul, Carmen Gregorianum, Dr Katharine Ellis of Cambridge, Father Angelo de Santi, French Anti-Clerical Law of Associations, Gregorian Rhythm Wars, horizontal episemata, Inter pastoralis officii Pius X, Katherine Ellis of Cambridge, Tra le sollecitudini Last Updated: October 30, 2024

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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

    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    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

“Edwin Fischer was, on the concert platform, a short, leonine, resilient figure, whose every fibre seemed to vibrate with elemental musical power.”

— Daniel Barenboim (1960)

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  • Music List • (1st Sunday of Lent)

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