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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

Gregorian Rhythm Wars

Jeff Ostrowski · April 15, 2026

“Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)

“My desire, Leroy, is to answer your question in a rigorously straightforward way.” —Jeff Ostrowski

Jeff Ostrowski · March 31, 2026

Gregorian Chant • The “Correct” Way of Singing ?

Now I will explain what that means.

Jeff Ostrowski · January 29, 2026

PDF Chart • “Plainsong Rhythm”

Whence this lack of curiosity?

Jeff Ostrowski · January 9, 2026

“Ad Te Levavi” • Variant

This particular variant hints at “tone painting.”

Jeff Ostrowski · January 3, 2026

How Does The Vatican “Rhythm” Actually Sound?

With an excerpt from the feast of the Baptism of the Lord.

Jeff Ostrowski · October 22, 2025

PDF Download • “Marian Antiphon Booklet” (4 pages) + Five Rhythmic Considerations

This 4-page ‘insert’ contains the seasonal Marian antiphons and various settings of the “Kýrie” my parish will be learning.

Jeff Ostrowski · September 15, 2025

How do you pronounce this word in Latin?

Including a comparison chart (PDF) which many readers will appreciate.

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 · May 23, 2025

Nobody Cares About This! • 1887 Rheims-Cambrai Gradual included “Restored” Plainsong

I’d be interested to know what Dr. Weaver thinks about how the mode is given.

Jeff Ostrowski · May 5, 2025

“Basic Catechism of Gregorian Chant” • Fifteen Questions Answered

“Kids, you’re only on this floating rock for a very short time.”

Jeff Ostrowski · March 29, 2025

PDF Download • “Gloria III” Organ Accompaniment

This is surely one of music history’s great ironies!

Jeff Ostrowski · March 8, 2025

“My Song Is Love Unknown” • Jeff Attempts to Sing All Parts … Including the Female Voices!

Few Catholics seem to realize it was Pope Pius XII who suppressed Tenebrae, a ceremony deeply loved by the faithful for centuries.

Jeff Ostrowski · January 31, 2025

PDF Download • Intensely Rare 1898 “Roman Gradual” — (Released for the First Time in History)

I carefully scanned all 642 pages in (color) high resolution.

Dr. Charles Weaver · January 23, 2025

My Recent Conversation • “Chant Rhythm”

This past week, I appeared on the Nikhil Hogan show to talk about Gregorian rhythm and the Vatican edition.

Jeff Ostrowski · January 6, 2025

PDF Download • Extremely Rare! —Solesmes “Graduale” acc. to the Official Rhythm (1,049 pages)

Doesn’t it stand to reason that we should sing from this edition in the manner its creators intended?

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Funeral Procession”
    From a mediæval Book of Hours, I was sent this glorious depiction of a Roman Catholic funeral procession by Simon Bening (d. 1561). The image resolution is extremely high. I’m not sure I know of a more beautiful illustration of a mediæval church. And I love how the servers are wearing red and pink cassocks!
    —Jeff Ostrowski
    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

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

  • PDF Download • “Funeral Procession”
  • Re: The “Correct” Way To Sing Gregorian Chant
  • PDF Download • Ascension “Entrance Chant”
  • Every Artist Needs a Refuge
  • Simplified Accomp. • Schubert’s “Ave Maria.”

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