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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

Jeff Ostrowski · February 8, 2016

What Are You Doing For Lent?

“The phone is our century’s plague. It destroys character, interaction, friendships, families, and our time. We are glued to these devices.”

Fr. David Friel · February 7, 2016

The Phrasing of the Sanctus

The Difference a Comma Makes

Veronica Brandt · February 6, 2016

Jesus Played Marbles

A picture book painting an historical picture of Jesus’ hidden life with the boys known in the Bible as His brothers while providing the evidence supporting the Catholic teaching of the perpetual virginity of Our Lady. And how to play marbles in a friendly way.

Richard J. Clark · February 5, 2016

The Three Pillars of a Successful Parish

There are three pillars that must be in place for a parish to sow the seeds of growth and vibrancy. If any one of them falls, the others suffer.

Dr. Lucas Tappan · February 5, 2016

Candles for Candlemas

A light of Revelation to the Gentiles!

Jeff Ostrowski · February 5, 2016

2016 • Sacred Music Symposium (Last Year’s)

We’re approaching capacity—if you’re interested, we need to hear from you soon!

Andrew Leung · February 4, 2016

Interview • Brandon Harvey, Founder of a New Institute

Brandon Harvey introducing the new Ministry Institute of Christ the Servant

Andrew Leung · February 4, 2016

BBC’s Choral Vespers from the London Oratory

The Sung Vespers is currently featured by BBC Radio 3

Jeff Ostrowski · February 3, 2016

Exclusive Interview • Mr. Nancho Alvarez

“I must point out that the content of my site is totally free, granting open access to everyone.” —Nancho Alvarez

Cynthia Ostrowski · February 3, 2016

“Ad Orientem” Image You’ll Want To Download

This high resolution image portrays a priest offering Mass with the Holy Trinity above.

Jeff Ostrowski · February 2, 2016

Ridiculously Awesome Sanctus You’ve Never Heard

We are not allowed to sing Tropes in the Extraordinary Form, so I added that text in italics.

Jeff Ostrowski · February 2, 2016

PDF Download • Simple Pieces For Roman Catholic Church Choirs (345 Pages)

First published in 1901 by Emile Dethier, organist at the Grand Seminary in Liège, Belgium.

Richard J. Clark · February 1, 2016

EWTN Broadcast • Mass of Ordination • First Bishop of the Personal Ordinariate of the Chair of St. Peter

The elevation of bishop by Pope Francis of Bishop-Elect Steven J. Lopes is highly significant as the First Bishop of the Personal Ordinariate of the Chair of St. Peter.

Jeff Ostrowski · January 31, 2016

Musical Resources • Sexagesima Sunday (EF)

“Grant, we humbly beseech Thee, almighty God, that those whom Thou refreshest with Thy sacraments…”

Fr. David Friel · January 31, 2016

Too Many Options

Allowing Adolescents to Choose Their Faith & the Wide-Open Permissions of the GIRM

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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

“At the hour for the Divine Office, | as soon as the signal is heard, | let them abandon whatever they may have in hand | and hasten with the greatest speed, | yet with seriousness, so that there is no excuse for levity. | Let nothing be preferred to the sacred liturgy.”

— Rule of St. Benedict (Chapter 43)

Recent Posts

  • 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)
  • Request From Australia
  • PDF Download • “Anima Christi”

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