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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

Carmen Gregorianum

Jeff Ostrowski · March 9, 2026

PDF Download • “Entrance Chant” for Holy Thursday (Plainsong in English)

Only a foolish and stubborn person would claim that “hyena” is basically the same thing as “a holy person.”

Jeff Ostrowski · February 23, 2026

PDF Download • “Gregorian Chant Booklet” mailed by Pope Saint Paul VI to every bishop

Father McManus makes no exception for hearing-impaired or deaf Catholics; his decree is absolute.

Jeff Ostrowski · February 12, 2026

PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)

This melody is quite ancient.

Jeff Ostrowski · February 10, 2026

“Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

“In a world filled with a lot of noise, your sacred song lifts our hearts to heaven…” —Parishioner

Jeff Ostrowski · December 23, 2025

💰 Are Church Musicians Paid Too Little?

I came very close to paying an unspeakably severe price.

Jeff Ostrowski · December 16, 2025

What does this mean? “Pre-Urbanite”

This topic I had believed to be fairly well understood—but I was wrong.

Jeff Ostrowski · December 10, 2025

Soloists in Gregorian Chant?

An “ensemble of soloists” will never sound the same as a true choir.

Jeff Ostrowski · November 1, 2025

“In Paradisum” • Gregorian Chant

While the coffin is being carried to the grave, the following anthem is sung.

Jeff Ostrowski · October 9, 2025

PDF Download • “Offertory” for this Sunday

Anyone know why the Book of Esther was chosen? That same section of Esther was chosen for last Sunday’s Introit.

Dr. Charles Weaver · October 8, 2025

The Real Miracle of Gregorian Chant

It may not have been dictated into a saintly pope’s ear by a dove, but the real story is no less wonderful.

Jeff Ostrowski · October 8, 2025

Why A “Fugue” Here?

I think you will agree about this.

Jeff Ostrowski · May 21, 2025

What No Musicologist Can Explain!

How glorious is Gregorian Chant!

Jeff Ostrowski · January 20, 2025

PDF • “Gloria VIII” on 5 lines!

As of a few minutes ago, you can freely download this PDF score.

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?

Jeff Ostrowski · December 19, 2024

“Entrance Chant” • 4th Sunday of Advent

Like so many Advent antiphons, this one is in the first mode and comes from the prophet Isaiah.

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Corpus Christi Watershed

President’s Corner

    Season’s End Repertoire
    Looking at the REPERTOIRE SHEET until the end of the choral season, I see that I’ve fallen behind schedule. (The last three months have been extraordinarily busy.) As you know, I have been providing organ harmonies for all the ENTRANCE CHANTS—as well as rehearsal videos—and you can see I’m behind where I planned to be. Now I must make up lost ground. However, the choir picks up the ENTRANCE CHANT with ease, so I’m sure it will all work out. My ‘unofficial’ harmonizations are being posted each week at the flourishing feasts website.
    —Jeff Ostrowski
    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

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

“Thus, by the celebration of a single Mass (in which he offers Jesus Christ in sacrifice), a priest gives greater honor to the Lord than if all men by dying for God offered to him the sacrifice of their lives. By a single Mass, he gives greater honor to God than all the angels and saints—along with the Blessed Virgin Mary—have given or shall give to him; for their worship cannot be of infinite value, like that which the priest celebrating on the altar offers to God.”

— Saint Alphonsus Liguori

Recent Posts

  • “Translating the Bible” • Msgr. Ronald Knox (1953)
  • Season’s End Repertoire
  • PDF Download • “Funeral Procession”
  • Re: The “Correct” Way To Sing Gregorian Chant
  • PDF Download • Ascension “Entrance Chant”

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