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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

Featured

Jeff Ostrowski · November 12, 2022

Gregorian Rhythm Wars • “Jeff’s First Response to Patrick” (12 Nov 2022)

Mr. Williams, today I challenge you (please) to provide direct responses for two questions.

Jeff Ostrowski · November 10, 2022

Blase Cardinal Cupich Responds Directly to Me!

I will not insult your intelligence by telling you what I suspect happened.

Jeff Ostrowski · November 9, 2022

“Vatican Commission on Gregorian Chant” • Biographies for Its Twenty Members

Including two (2) documents translated into English for the first time!

Jeff Ostrowski · November 8, 2022

“Whoever controls the language controls the Masses.”

“Missa Back-To-The-Future” (a recent OCP offering) isn’t part of the treasury mandated by Vatican II; nor do I belong on the basketball court with Michael Jordan.

Corpus Christi Watershed · November 3, 2022

“Now Available!” • Campion Missal (3rd Edition)

Three words: “Sleek, Powerful, and Gorgeous”

Jeff Ostrowski · November 1, 2022

“Gregorian Chant Rhythm Wars” • Ostrowski Vs. Williams

My colleague, Patrick Williams has agreed to enter into a “colloquy” with me vis-à-vis Gregorian rhythm.

Follow the Discussion on Facebook

Corpus Christi Watershed · October 26, 2022

“Dates Revealed” • 2023 Sacred Music Symposium

Mark your calendars for this life-changing conference!

Jeff Ostrowski · October 22, 2022

“Vespers of the Dead” • Most Elaborate Book of Hours I’ve Ever Seen

Our Lord said that if men withheld their praise of Him, “the very stones would cry out…”

Jeff Ostrowski · October 17, 2022

“Hymn By A Saint” • For All Saints (November 1st)

There’s something truly ‘haunting’ about this melody by Flor Peeters—and once it’s in your head, it’s hard to banish!

Jeff Ostrowski · October 15, 2022

USCCB • “Principal Music Books for the Eucharist”

The principal books of music for the Eucharist were recently (re-)confirmed by the United States Conference of Catholic Bishops.

Jeff Ostrowski · October 11, 2022

PDF Download • 1915 “Gregorian Vesperale” … Printed On Five Lines! (651 Pages)

Father Weinmann placed plainsong on five (5) lines, yet still used Gregorian notation—including chord symbols!

Jeff Ostrowski · October 1, 2022

“Released” • A Eucharistic Hymn You’ll Love!

Installment 4 • “How Has Nobody Done This Before?” (series)

Jeff Ostrowski · September 27, 2022

“What Is Polyphony?” • With Audio Examples

A professor at our conservatory always told us: “An example is worth 1,000 words.”

Jeff Ostrowski · September 26, 2022

Say “Hello” to the Villain Who Lied About You

Fulton J. Sheen told a story about a man who bumped into Abraham Lincoln yelling: “Get out of my way, you big ugly lummox!”

Jeff Ostrowski · September 18, 2022

“An Irish Hymnal?” • 126 Pages (English and Gaelic)

I find this hymn quite beautiful—and singers love it!

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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

On 12 March 1908, Feast of St. Gregory the Great, the complete publication of the “Graduale” was issued by the Vatican Press. That very day, Dom Pothier solemnly presented the first copy to the Holy Father. Pius X wished to be the first to see the new book; he opened it at random, at page 128 of the supplement “pro aliquibus locis”—the Introit of the new Feast of Our lady of Lourdes. The Pope sang it with perfect taste to the last note.

— A witness of the papal audience writing circa 1915

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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