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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

Christmas • “Approached By A Famous Musicologist”

Jeff Ostrowski · December 30, 2023

ISCONCERTING. Dr. Katharine Ellis—professor of musicology at Cambridge University in England—uses the word “disconcerting” to describe the argument I’ve been putting forth in terms of Dom Mocquereau’s illicit befouling of the Church’s official edition of Gregorian Chant. The way I’ve described matters is: Dom Mocquereau takes into account the complete plainsong repertoire when it comes to pitches, but only a handful of manuscripts when it comes to rhythm. I have described this minuscule portion of manuscripts—for which he has a predilection—as “MOC’S FANTASTIC FOUR.” In other words, I’ve pointed out how Dom Mocquereau, looking over the entire collection of ancient Gregorian manuscripts, unabashedly declared almost every single one of them to be ‘garbage’ from the standpoint of rhythm (although he valued those same manuscripts highly vis-à-vis the pitches).

Snazzy Words • Describing this phenomenon, Dr. Katharine Ellis uses fancier words on page 112 of her book (The Politics of Plainchant in fin-de-siècle France, 2013). If you’re somebody who likes grandiloquence, you will prefer her description to mine. But the argument she’s putting forth is very similar to mine:

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.

I warned you that Dr. Ellis uses snazzier words than I do!

Numerous Reasons • Some have claimed that I embrace the official edition “because it comes from authority.” I suppose that’s one reason, but there are many! For instance, it just makes sense to sing an edition the way it was intended to be sung by those who created it. Moreover, I believe the illicit elongations by Dom Mocquereau destroy the melodic line (often fatally) and tend to make plainsong fussy and plodding. Furthermore, having examined the ancient manuscripts for more than twenty years, I haven’t been able to find any evidence supporting the rhythmic claims of Dom Mocquereau—or, for that matter, his disciple, Dom Eugène Cardine.1

Does It Matter? • Does any of this matter? Readers must decide for themselves. I invite you to consider the first antiphon for CHRISTMAS VESPERS:

*  PDF Download • COMPARISON CHART
—Dom Mocquereau Vs. the Official Edition.

Looking at that chart, is there anything more to be said?

Famous Musicologist • A famous plainchant scholar approached me after one of our Christmas Masses last week. (This person is a university professor I’ve been following since the 1990s.) Coming forward, he shook my hand and said: “I want to thank you for supporting the official edition.”

1 I remain open to being convinced, if any readers are willing to point out such evidence.

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

Filed Under: Articles, PDF Download Tagged With: Dom Eugène Cardine, Dr Katharine Ellis of Cambridge, Gregorian Rhythm Wars Last Updated: December 30, 2023

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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

    “Reminder” — Month of April (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
    Simplified Accompaniment (Easter Hymn)
    Number 36 in the Brébeuf Hymnal is “At the Lamb’s high feast we sing,” an English translation for Ad Cenam Agni Próvidi (which was called “Ad Régias Agni Dapes” starting 1631). As of this morning, you can download a simplified keyboard accompaniment for it. Simply click here and scroll to the bottom. Many organists are forced to serve simultaneously as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult—which explains why choirmasters appreciate these simplified keyboard accompaniments. Sadly, many readers will click that link but forget to scroll to the bottom where the simplified PDF file is located.
    —Jeff Ostrowski
    PDF Download • “Quasi Modo Sunday”
    The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “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

Random Quote

“It would be difficult to find a failure of imagination greater than that of Carl Czerny.”

— Robert Schumann

Recent Posts

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  • Request From Australia
  • PDF Download • “Anima Christi”
  • PDF Download • “Rarer Than a Blue Moon” — Side-by-Side English Translation (Pius XII Psalter)

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