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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

Missale Vetustum

Jeff Ostrowski · December 27, 2025

“Kaitrin Drost Strikes Again!” • Plus a Few Random Thoughts and Tirades by Jeff Ostrowski

Imagine walking up into a choir loft and sounding like these young ladies without rehearsal.

Mark Haas · July 4, 2025

“My First Year with the Latin Mass” • A Music Director’s Perspective

“Assisting at the Traditional Latin Mass has changed me.” —Mark Haas

Corpus Christi Watershed · July 4, 2025

Boston Auxiliary Bishop: “In offering the Traditional Mass for the first time, after removing the vestments, I knelt in the back pew and wept.”

As of 4 July 2025, Bishop Reed’s post on Twitter had received 188,800 views.

Jeff Ostrowski · June 19, 2025

“Dom Jausions had a skilled hand. His transcriptions are masterpieces of neatness & precision.”

A few days ago, Dominique Gatté released something quite extraordinary.

Jeff Ostrowski · June 4, 2025

“Breathtaking Photographs” • First Mass of Father Michael Caughey, FSSP (Muskegon, MI)

Our choir sang so beautifully for this special Mass!

Jeff Ostrowski · May 27, 2025

PDF Download • “Entrance Chant” for 29 June … Which Falls on a Sunday This Year!

Growing up, we had an encyclopedia in our basement—but that was hardly the equivalent access to the internet!

Jeff Ostrowski · May 8, 2025

Cardinal Prevost (Pope Leo XIV) “Privately Offered the TLM in His Private Chapel”

Allegedly, the source of this information “had the only indult to say the TLM at the USCCB office in Baltimore back in the 1990s.”

Andrea Leal · April 2, 2025

“What is the Best Catholic Missal?” • Video Review by Catholic Family News

“I am shocked this isn’t more well known; this is really a spectacular work.” —Catholic Family News

Jeff Ostrowski · October 29, 2024

A Suggestion for Ordinary Form Masses

The idea developed (somehow) that having the priest wait 15 minutes for an item he needs is “good and reverent” liturgy. But that’s false.

Corpus Christi Watershed · September 26, 2024

(In Canada) • Today is the “Feast of Saint Isaac Jogues & Companions”

Several stained glass images of Saint Isaac Jogues.

Jeff Ostrowski · May 20, 2024

ABC’s “The View” Attacks the Traditional Latin Mass

If you were arrested and charged with being a Christian, would there be enough evidence to convict you?

Jeff Ostrowski · November 21, 2023

Jeff Ostrowski’s Performance of Plainsong Attacked as “Inartistic”

The special Vigil of Christmas “Alleluia” sung according to the official rhythm of the Catholic Church.

Jeff Ostrowski · November 17, 2023

Pope Saint Paul VI did not outlaw the TLM

This video shows a signatory of the famous “Agatha Christie Indult” talking about Glenn Gould (specifically his Bach interpretations).

Jeff Ostrowski · November 8, 2023

“No Fourth Sunday of Advent” (EF)

In the Extraordinary Form (“Missale Vetustum”) because Christmas falls on a Monday in 2023, the Vigil of the Nativity of Our Lord takes precedence over the Fourth Sunday of Advent. This usually only happens about every six years or so. I will miss the 4th Sunday of Advent, but the VIGIL Mass is also quite […]

Jeff Ostrowski · October 2, 2023

Palestrina Would Not Recognize This! • (Plus: Hopeful Signs)

On 21 September 2023, composers Dan Schutte, Roc O’Connor, and Bob Dufford stood in the Sanctuary of Old St. Patrick’s Church…

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Corpus Christi Watershed

President’s Corner

    Simplified Accomp. • Schubert’s “Ave Maria.”
    Sometimes the organist must simultaneously serve as the CANTOR. (Those who work in the field of church music know exactly what I’m talking about.) One of our contributors composed this simplified keyboard accompaniment for Franz Schubert’s “Ave Maria,” a piece which is frequently requested for Catholic funerals and weddings. In terms of the discussion about whether that piece is too theatrical (‘operatic’) for use in Church, I will leave that discussion to others. All I know is, many church musicians out there will appreciate this simplified version.
    —Jeff Ostrowski
    “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

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

“In everything of any importance at all, Sarum (and all other mediæval rites) was simply Roman, the rite which we still use.”

— Fr. Adrian Fortescue (1912)

Recent Posts

  • Simplified Accomp. • Schubert’s “Ave Maria.”
  • “The Unselected Hymn” • Do You Recognize It?
  • 2026 Sacred Music Pilgrimage (Washington DC) • With Richard J. Clark
  • “Reminder” — Month of April (2026)
  • “Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)

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