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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 • Extremely Rare! • “Liber Cantus Gregoriani” (1950) — 1,864 pages!

Jeff Ostrowski · June 27, 2023

WENTY YEARS AGO, nobody could have predicted that a future pope would issue a decree attempting to curb the spread of the Latin Mass (as a result of its burgeoning popularity among the faithful). Even five years ago, if someone had claimed the CDW would browbeat local bishops to convince them to ostracize Catholics who obtain spiritual consolation from the ancient rites, such a prediction would have been mocked. Indeed, future Catholics will scratch their heads vis-à-vis the post-conciliar years—especially with regard to public declarations by high-ranking clerics saying that “obeying Vatican II” means doing the opposite of what Vatican II explicitly mandated. I don’t pretend to understand why God has allowed certain things to happen. Nevertheless, the response of a faithful Christian must be to pray (earnestly) to God: “Do with me what Thou wilt…”

Calmness • The saints possessed great serenity and peace of soul. Of course, I can’t speak for my colleagues—but I suspect they would agree it’s best to avoid running around “as if one’s hair is on fire.” We should not proceed in a frenzied, panic-stricken manner. Rather, let us pray each morning for the grace to do God’s Will. Having done that, let us undertake our work with tranquility. Catholic monks, by means of a shovel, would remove one ‘scoop’ from the ground each morning. They were—quite literally—digging their own grave. This was done to remind them that “you know neither the day nor the hour” (Mt 25:13).

Psychologist • According to psychologists, you should never mention just one thing. You should never say: “I love my car for many reasons; for example, I love that it’s painted red.” Some people listening won’t understand. In their mind, what you said was: “I love my car for just one reason—because it’s red.” Therefore, I’m taking a risk by mentioning one thing we do here at CORPUS CHRISTI WATERSHED. [Okay, here goes!] One of the many things we do here is make it possible for Catholic musicians to understand our history and tradition. Therefore, we hunt for, obtain, and (painstakingly) scan rare books. Then we make them available online for free!

Extremely Rare Book • Today, we release a professional scan of a book which is extremely rare. We obtained this treasure through the generosity of John Greutman. Our organization paid a lot of money to have it scanned professionally. We believe this book is part of the THESAURUS MUSICAE SACRAE, which Vatican II said must be “preserved and fostered with great care.”

*  PDF Download • “LIBER CANTUS GREGORIANI”—1,864 pages!
—IMPRIMATUR 28 December 1950; Dessain (Belgium).

Title Of This Book • The book is called: Liber cantus Gregoriani: complectens Missas, Vesperas et Completorium ad singulos anni dies necnon et parvas horas diebus festivis ex ultimis editionibus Vaticanis. Translated into English: “Book of Gregorian Chant Including Masses, Vespers and Compline for individual days of the year as well as the Little Hours on Feasts from the most recent Vatican editions.” It has completely different typesetting (!) than the 1951 Mechlin Graduale I released in 2008. This book contains as much (or more!) as what is contained in the famous “Liber Usualis” of Solesmes Abbey.

Re: Official Rhythm:

No Weird Stuff (A) • In his 1977 tome, Monsignor Francis P. Schmitt spoke of attending Mass at the SAINT JOSEPH ORATORY in Montreal. He said their choir (consisting of 80+ singers) was as fine as any on the continent. According to Monsignor Schmitt: “A polyphonic Creed was sung during the distribution of Communion.” To my liturgical sensibilities, it’s quite ‘odd’ or ‘strange’ or ‘weird’ to sing a polyphonic Creed during the distribution of Holy Communion. I’m against doing things which are weird during the sacred liturgy. [By the way, I know what Saint Joseph’s Oratory was trying to do. It was attempting to preserve the THESAURUS MUSICAE SACRAE in an era where there was great hostility to following the mandates of Vatican II.]

No Weird Stuff (B) • Somebody might say: “But Jeff, don’t you sing Gregorian Chant in a weird way?” No, I do not. I sing according the system of rhythm mandated by the Congregation of Sacred Rites under Pope Saint Pius X. The book we released above (all 1,864 pages of it!) is a testimony to the reality that many publishers followed the official rhythm. The SCHWANN GRADUALE is another example, as is the version published by the Vatican Polyglot Press. And we will be releasing even more editions over the coming months.

Here’s an example taken from the official edition:

But the edition by Dom Mocquereau—which became very popular—added all kinds of extra elongations (while eliminating many of the elongations mandated by the official edition). Here is how that same antiphon appears in the version by Dom Mocquereau:

Problems With Mocquereau (A) • Dom Mocquereau claimed that most of his additions were based upon a handful of manuscripts, for which he had a predilection. One problem with Mocquereau’s editions is that they (supposedly) reproduce the rhythm from a handful of manuscripts, but they ignore close to 10,000 other manuscripts, which are also part of the THESAURUS MUSICAE SACRAE.

Problems With Mocquereau (B) • There’s another problem. Imagine if each editor had done what Dom Mocquereau did. That is to say, imagine that each editor had selected a handful of manuscripts (for which they had affection) and then modified the official edition based on those. Does anyone think that would be a good idea?

“As Many As Possible” • Katharine Ellis has suggested that Prior André Mocquereau may have had a financial incentive to make his monastery’s editions “special” or “proprietary” or “distinctive.” Specifically, when Dom Mocquereau learned that other companies might attempt to superimpose proprietary symbols over the official edition, Mocquereau was advised to “put as many rhythmic signs as possible in the Gradual and Antiphoner.” In spite of the Vatican decrees, he did precisely that! Indeed, when the GRADUALE appeared (12 march 1908) followed by the ANTIPHONALE (20 December 1912), Dom Mocquereau added so many modifications, many melodies became unrecognizable.

Strongly-Worded Letter! • Indeed, when Dom Mocquereau learned (in January of 1905) that another printer was planning to do what he had done—viz. add rhythmic signs to the official edition based on particular manuscripts—he became full of “rage” according to Katharine Ellis. He wrote an angry letter to one of his supporters in Rome. Referencing his “proprietary” rhythmic modifications, Dom Mocquereau said these modifications constituted:

“our only means to……………………”

What precisely did those ellipses mean? Dr. Katharine Ellis, a professor at the University of Cambridge, claims on page 94 (The Politics of Plainchant in fin-de-siècle France, 2013) that Dom Mocquereau’s meaning was “patently obvious” to his correspondent. That is to say, his point was: these proprietary modifications were his monastery’s “only means” (seul moyen pour nous…) to beat the competition.

39846-Photo-By-John-Greutman
39845-Photo-By-John-Greutman
39847-Photo-By-John-Greutman

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

Filed Under: Articles, PDF Download Tagged With: 1950 Dessain Liber Cantus Gregoriani, Inter pastoralis officii Pius X, Liber Usualis 1950, Thesaurus musicae sacrae Last Updated: June 28, 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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President’s Corner

    “Entrance Chant” • 23rd (Ordinary Time)
    This coming Sunday, 7 September 2025, is the 23rd Sunday in Ordinary Time (Year C). You can download the “Entrance Chant,” conveniently located at the feasts website. I also recorded a rehearsal video for it (freely available at the same website). The Communion Chant includes gorgeous verses in FAUXBOURDON. I attempted to create a rehearsal video for it, and it’s been posted at the feasts website, called by some: “church music’s best kept secret.”
    —Jeff Ostrowski
    PDF Download • 3 September
    According to the MISSALE RECENS, the Feast of Saint Gregory the Great occurs on 3 September (the date Gregory became pope). Formerly, his feast was celebrated during Lent, on 12 March (the day Gregory died). In Latin, the feast is: Die 3 Septembris: S. Gregorii Magni, papæ et Ecclesiæ doctoris. you can download the Latin Introit, the Latin Offertory, as well as the Communion with gorgeous fauxbordon in English. Abbat Joseph Pothier—along with Dom André Mocquereau, Bishop Laurent Janssens, Father De Santi, and other Gregorian superstars—sang with a choir of 1,210 voices (from 36 different Roman colleges) under the direction of Monsignor Antonio Rella. That Mass included the “Alma cohors,” a special SEQUENCE for Saint Gregory…much to the dismay of those who believe in strict adherence to rubrics. The Mass on 11 April 1904 was celebrated by Pope Saint Pius X, at the great GREGORIAN CONGRESS held in Rome “to mark the 13th Centenary of the death of Saint Gregory the Great.” Someday, there’s much I’d love to say about this congress. We even have recordings (!) from it (made in 1904 by the Gramophone Company) with choirs conducted by Dom Pothier, Dom Mocquereau, Dom Janssens, Monsignor Rella, Baron Kanzler, and others.
    —Jeff Ostrowski
    New Bulletin Article • “7 September 2025”
    My pastor requested that I write short articles each week for our parish bulletin. Those responsible for preparing similar write-ups may find a bit of inspiration in these brief columns. The latest article is called: “Professor Bouyer’s Regret.”
    —Jeff Ostrowski

Quick Thoughts

    Solemn “Salve Regina” (Chant)
    How many “S” words can you think of using alliteration? How about Schwann Solemn Salve Score? You can download the SOLEMN SALVE REGINA in Gregorian Chant. The notation follows the official rhythm (EDITIO VATICANA). Canon Jules Van Nuffel, choirmaster of the Cathedral of Saint Rumbold, composed this accompaniment for it (although some feel it isn’t his best work).
    —Corpus Christi Watershed
    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed

Random Quote

“All those who take part in sacred music, as composers, organists, choir directors, singers, or musicians should above all give good example of Christian life to the rest of the faithful because they directly or indirectly participate in the sacred liturgy.”

— Directive issued under Pope Pius XII on 3 Sept. 1958

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