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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 · September 10, 2020

PDF Download • 1928 “Invitatory” (86 pages)

The “invitatory” occurs at the beginning of Matins and therefore introduces the daily divine Office.

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Richard J. Clark · September 8, 2020

(Installment #7) “Catholic Hymnals” • Richard J. Clark

“Hymns, Psalms, and Spiritual Canticles”—the most influential post-conciliar hymnal—was never distributed by any large publisher!

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Jeff Ostrowski · September 8, 2020

“Homily — 24th Sunday in Ordinary Time, Year A” • Father Valentine Young, OFM

“Often, the person who did us harm won’t even know that we’re still stewing over what they did to us; and if they knew, they might even be glad.”

Jeff Ostrowski · September 7, 2020

Jeff Ostrowski • “Three Rules For Good Music”

But we have not spoken very much about Baroque music…

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Keven Smith · September 7, 2020

Introvert, Except at Rehearsal? You May Be an Ambivert

(Keven Smith) • Here are some suggestions on how to get the most out of your unusual combination of skills and traits+

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Wilfrid Jones · September 6, 2020

Music as a Technology of the Soul

When you ask how a computer works, what you’re really asking is how people use it. That’s a good starting point for understanding how liturgical music works, but just as a computer trains its user to work in a particular way, liturgical music trains us to pray in particular ways.

Jeff Ostrowski · September 6, 2020

Important Message To Fathers

“Kids don’t remember this…”

Jeff Ostrowski · September 4, 2020

(Installment #6) “Catholic Hymnals” • Jeff Ostrowski

How to avoid that sickening feeling when you realize nobody—and I mean nobody—in the congregation knows the hymn you picked!

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Jeff Ostrowski · September 4, 2020

“Homily for the 14th Sunday after Pentecost” (EF) • Father Valentine Young, OFM

“If worry did any good, I would advise you to do it—but it is wasted time and energy.”

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Jeff Ostrowski · September 4, 2020

Sir Richard Terry: Hymns, Congregational Singing, and Avoiding “Violence” to the Elders

Terry was forced to resign from the Cathedral in 1924, partially due to his “inconsistent approach to congregational singing at the Cathedral.”

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Dr. Gregory Hamilton · September 3, 2020

(Installment #5) “Catholic Hymnals” • Dr. Gregory Hamilton

The word “hymn” is one of the earliest music words in all languages…

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Jeff Ostrowski · September 3, 2020

“That Image” from World War II • Further Questions

When I look more closely, I notice some very tiny (“itsy bitsy”) hand missals held by the soldiers…

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Dr. Charles Weaver · September 2, 2020

(Installment #4) “Catholic Hymnals” • Charles Weaver

On how tunes change over time, with a reflection on the sacred duty of hymn editors.

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Jeff Ostrowski · September 2, 2020

Holy Mass During World War II • (9 April 1944)

German troops included in American Easter Sunday Mass via loud-speaker.

Jeff Ostrowski · September 1, 2020

PDF Download • “Communion Antiphon” (with organ accompaniment)

An exciting new project gives me great hope for the “musical future” of the Catholic Church!

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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

“I prefer to say nothing, or very little, about the new calendar, the handiwork of a trio of maniacs who suppressed—with no good reason—Septuagesima and the Octave of Pentecost and who scattered three quarters of the Saints higgledy-piddledy, all based on notions of their own devising!”

— ‘Fr. Bouyer, Consilium member appointed by Pope Paul VI’

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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