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Corpus Christi Watershed

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Views from the Choir Loft

Dom Josef Pothier

Jeff Ostrowski · April 15, 2026

“Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)

“My desire, Leroy, is to answer your question in a rigorously straightforward way.” —Jeff Ostrowski

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Jeff Ostrowski · December 6, 2023

(Advent, 2nd Sunday) • Introit “Pópulus Sion” Sung According to the Official Rhythm

We can hardly do better than to join in the same melodies sung by Catholic saints throughout history.

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Cynthia Ostrowski · September 11, 2023

Can a Lens Make a Difference?

My husband tells me this edition (by Dom Pothier’s student) is of monumental importance. I take him at his word.

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Jeff Ostrowski · June 1, 2023

PDF Download • “Epitome Gradualis Romani” • Professionally Scanned — 1,106 pages!

Years ago, I struggled with being a “people pleaser.” (That means saying whatever will please the person standing in front of you.)

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Jeff Ostrowski · December 13, 2022

Who Can Guess This Melody? • (Rorate Mass)

… from the “Roman Gradual” (1912) edited by Max Springer, a famous Gregorianist of the Beuron school.

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Matthew Frederes · December 12, 2022

Recent Book! • “The Politics of Plainchant”

Fascinating details from never-before-seen letters recently discovered in southern France!

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Jeff Ostrowski · December 6, 2022

Gregorian Rhythm Wars • “Jeff’s Second Response to Patrick” (6 Dec 2022)

You look upon these thousands of manuscripts in much the same way that I view the plainsong editions of Guillaume-Gabriel Nivers.

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Matthew Frederes · November 10, 2022

Gregorian Rhythm Wars • “Frederes Feedback”

Why declare that rhythmic signs are permitted if alteration of any kind is unacceptable? It doesn’t make any sense…

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Jeff Ostrowski · August 23, 2022

PDF Download • Organ Accompaniment for Kyrie VIII (“Missa de Angelis”) by Jeff Ostrowski

I consider this my best organ accompaniment … I hope you like it!

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Jeff Ostrowski · July 22, 2022

PDF Download • Professionally-Scanned “Graduale Romanum” (Schwann, 1908) • 1,129 pages!

This is the “pure” Vatican Edition—technically the only version of the rhythm allowed by Church documents!

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Corpus Christi Watershed · July 6, 2022

“Chant Rhythm Wars” • Dueling Lectures!

Ostrowski Vs. Weaver: Solesmes Rhythm, Gregorian Semiology, Dom Mocquereau, Dom Pothier, Mensuralism, and more!

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Jeff Ostrowski · June 28, 2022

Photograph • Dom André Mocquereau (d. 1930)

Dom Mocquereau, prior to becoming a monk, was a soldier in the Franco-Prussian War.

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Jeff Ostrowski · April 1, 2022

Gregorian Chant • “Its True & Authentic Rhythm”

For this coming Sunday (Passion Sunday), there’s only one “MMV” singers must observe—and I placed a little arrow above it.

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Jeff Ostrowski · October 18, 2020

Dom Pothier • “To The Eyes And To The Ears”

For years, I couldn’t understand this business about “the eyes and the ears.” What did Pothier mean? Then it hit me. • Topics include Dom Joseph Pothier, the mora vocis, Abbot Pothier’s brother (Dom Alphonse Pothier), Dom Lucien David, Dom Paul Jausions, and a truly magnificent story about Pope Pius X and Abbot Pothier, which is essential reading+

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Corpus Christi Watershed

President’s Corner

    Stained Glass Window • Father Brébeuf
    Saint John de BrĂŠbeuf was one of the North American Martyrs. The photograph of a gorgeous stained glass window depicting Father BrĂŠbeuf was sent to us by Courtney Roberson. Father BrĂŠbeuf and his companions were canonized by Pope Pius XI on 29 June 1930. We are told this window is found in the Cathedral of Peoria, Illinois.
    —Jeff Ostrowski
    Sacred Music “Pro Tip”
    Our website welcomes millions of visitors, yet surprisingly few find their way to the actual blog page itself. If you are among them, bookmark it today. Numerous articles and resources await you—but these treasures belong to those who explore each article, not merely its title. The headline is only the doorway; the substance lies within.
    —Jeff Ostrowski
    Music List • (29th Sund. Ordinary Time)
    Readers have expressed interest in seeing the ORDER OF MUSIC which I created for this coming Sunday, the 29th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. The INTROIT for this Sunday explains why this Sunday is called “Apple Sunday.” As we approach the end of the liturgical year, most of the INTROITS seem to be in Mode III or Mode IV, which are ‘haunting’ tones.
    —Jeff Ostrowski

Quick Thoughts

    PDF • “Singers’ Booklet” (26 Pages)

    This is a ‘messy’ booklet in terms of its formatting, but it’s only ever seen by the singers—not members of the congregation.

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    —Jeff Ostrowski
    Preface of Saint Joseph (added by the pope)

    You can see the “PrĂŚfatio de Sancto Joseph” inserted directly into the priest’s missal.

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    —Jeff Ostrowski
    “Predictable Rhymes?” • A Follow Up
    We received considerable correspondence regarding my article, Two Ways to Defile a Hymn. More specifically, what really raised certain people’s hackles was its follow-up article dealing with the keyboard accompaniment for the CHRIST THE KING HYMNAL. But to quote Eliza Doolittle: “Have I said anything I oughtn’t?” Please examine this PDF file and see whether you agree. Were the editors of the BRÉBEUF HYMNAL incorrect to insist upon sophisticated and clever rhymes, rather than mind-numbingly predictable rhymes?
    —Jeff Ostrowski

Random Quote

Indeed I might add that although unfamiliar with it myself, the Extraordinary Form expressly reminds us that Mass in either form is not merely a communion meal but a ritual of love, a sacrifice at Calvary, by which, for you and for me, yes, here and now, Jesus Christ lays down his life.

— ‘Most Rev. Philip Egan, Bishop of Portsmouth’

Recent Posts

  • Stained Glass Window • Father BrĂŠbeuf
  • PDF • “Singers’ Booklet” (26 Pages)
  • Sacred Music “Pro Tip”
  • PDF Chart (33,344 words) • “Graduale Romanum”—Spanish, English: Multiple Approved Translations
  • Music List • (29th Sund. Ordinary Time)

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