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Corpus Christi Watershed

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

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Jeff Ostrowski · February 12, 2025

“Register Today!” • Sacred Music Symposium 2025

A generous benefactor has agreed to cover 50% of the tuition for those who register before a certain date.

Corpus Christi Watershed · February 7, 2025

“Win or Lose, a Fight Worth Fighting!” • (Email Received from a Priest)

We owe a tremendous debt of gratitude to Jeffrey Tucker, who prevented a non-Christian company from securing a monopoly on the (mandatory) English psalm translation!

Jeff Ostrowski · February 7, 2025

“Music List” • 5th Sunday (Ord. Time)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · February 6, 2025

PDF Download • “Communion Refrain” (Polyphony) for Three Voices — with Psalm 117

This injunction from Archbishop Fulton J. Sheen is crucial for artists.

Jeff Ostrowski · February 5, 2025

PDF Download • “Psalm Comparison Chart”

This PDF chart will be of interest to Catholic musicians!

Corpus Christi Watershed · February 4, 2025

Antiphons Don’t Match?

The short answer is: the “Adalbert Propers” were never intended to be sung.

Jeff Ostrowski · February 4, 2025

PDF Download • “Entrance Chant” for the 5th Sunday in Ordinary Time (Year C)

I would argue we must renew our good resolution and stand firm.

Jeff Ostrowski · February 2, 2025

“Music List” • Presentation (2 February)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · February 1, 2025

“Entrance Chant” • Presentation (2 Febr.)

This English adaptation imitates the authentic Gregorian Chant version in a splendid way.

Jeff Ostrowski · January 31, 2025

PDF Download • Intensely Rare 1898 “Roman Gradual” — (Released for the First Time in History)

I carefully scanned all 642 pages in (color) high resolution.

Jeff Ostrowski · January 31, 2025

2 February • “Communion”

I would say: “Somewhat dark, yet beautiful”

Jeff Ostrowski · January 30, 2025

Thoughts on the “English” Method of Hymn-Printing

Protestants sometimes say: “One must never omit verses of a hymn, because hymns tell a story.”

Jeff Ostrowski · January 28, 2025

Breaking! • “Cardinal Roche Vs. Bishop Paprocki” (Development on 23 Jan. 2025)

On 23 January 2025, Arthur Cardinal Roche attempted (?) to overrule the Vatican’s “Committee on Canonical Affairs.”

Corpus Christi Watershed · January 27, 2025

Photograph • Mass at Dachau Concentration Camp

Is that a tiny pipe organ?

Jeff Ostrowski · January 27, 2025

PDF Download • 3-Voice Arrang. by Helen Drost

You owe it to yourself to listen to this ‘live’ recording.

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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

When the matter is thus regarded, an assertion which is being made today, not only by laymen but also at times by certain theologians and priests and spread about by them, ought to be rejected as an erroneous opinion: namely, that the offering of one Mass, at which a hundred priests assist with religious devotion, is the same as a hundred Masses celebrated by a hundred priests. That is not true.

— Pope Pius XII (2 November 1954)

Recent Posts

  • “Reminder” — Month of April (2026)
  • “Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)
  • 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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