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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

Articles

Andrew Leung · August 27, 2016

The Reason for Choir — Paul Mealor

Welsh composer, Paul Mealor, talks about the importance of choral music.

Richard J. Clark · August 26, 2016

Communion Antiphons for Advent & Christmas • NEW • World Library Publications

World Library Publications has published settings of Communion propers for Advent and Christmas. Listen here to beautiful recordings directed by Paul French.

Andrew Leung · August 25, 2016

I Am Moving Again!

I will be studying at St. Joseph Seminary in the historical Diocese of Macau, China.

Jeff Ostrowski · August 25, 2016

“Simple Kyriale” for Dumb Organists Like Me!

Fr. Valentine used to say: “You can play 100 notes right, and miss just one—and people will criticize you for that wrong one!”

Jeff Ostrowski · August 25, 2016

The Eight Gregorian Psalm Tones (PDF)

I’m sick of looking for this chart online!

Jeff Ostrowski · August 24, 2016

Can You Hear The Difference?

Do you prefer polyphony recorded by just my voice, or mixed with “real” voices?

Jeff Ostrowski · August 23, 2016

“Ad Orientem” • Why I’m Rejoicing over Sloppy Errors in the Catholic Herald

His assertion that “smoking out enemies” is best done by appointing them to high positions in the Vatican is absurd.

Dr. Lucas Tappan · August 23, 2016

A New Choral Year Off to the Races

If you aren’t used to working with children, it can be a bit daunting on your first day…

Fr. David Friel · August 21, 2016

Essence, Form, Experience

Fourth Annual Art of the Beautiful Lecture Series

Richard J. Clark · August 19, 2016

Saint Cecilia and an Angel Orazio Gentileschi and Giovanni Lanfranco

New Resource from the Archdiocese of Boston for First Communion and Confirmation

The most important element of this document is not the list of hymns and chants, but the vital coupling of faith formation and sacred music.

Jeff Ostrowski · August 18, 2016

“Polyphony For Dummies”

A new video presentation with excellent audio samples.

Jeff Ostrowski · August 16, 2016

Breathtaking Images from Poland

A liturgical workshop took place in Licheń, Poland from 4-11 August 2016.

Dr. Lucas Tappan · August 16, 2016

Strive for Excellence

Let’s face facts—the English cathedral system of forming church musicians works.

Jeff Ostrowski · August 15, 2016

Hymn for St. Thomas More & St. John Fisher

Fascinating verses by Msgr. Ronald Knox

Cynthia Ostrowski · August 15, 2016

Catholic Bulletin Art • Installment #71

If you’re confused about what’s happening, search google for “Dormition of Mary.”

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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 is frightful even to think there are children, victims of abortion, who will never see the light of day.

— Pope Francis (13 January 2014)

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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