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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

Easy Polyphony For Amateurs

Corrinne May · October 27, 2025

PDF Downloads • Four (4) Simple Pieces in Harmony for Men’s Choirs

‘Outstanding choral repertoire for men’s voices is more precious than gold.’ —Corrinne May

Jeff Ostrowski · October 14, 2025

PDF Download • Liturgical Round (“Canon”) for your Children’s Choir

An example that’s truly great art, yet still within their reach.

Jeff Ostrowski · March 17, 2025

“Opportunity of a Lifetime” • Don’t Miss This!

The vast majority of these women had never sung plainsong—but they’ve taken to it like a duck to water.

Jeff Ostrowski · March 7, 2025

“Kyrie Setting” we’re doing for Lent

Kyrie VIII with polyphony.

Jeff Ostrowski · February 6, 2025

PDF Download • “Communion Refrain” (Polyphony) for Three Voices — with Psalm 117

This injunction from Archbishop Fulton J. Sheen is crucial for artists.

Jeff Ostrowski · August 27, 2024

When Teaching a Polyphony for the First Time, Use This Three-Voice Piece

The Solfège has already been added, and we made magnificent rehearsal videos for you!

Jeff Ostrowski · August 20, 2022

“New Section 2” • (Piecemeal Agnus Dei)

A wonderful way to get volunteers singing SATB polyphony immediately!

Jeff Ostrowski · July 30, 2022

PDF Download • “Contemporary Sanctus” (SATB)

This SATB setting by Father Lhoumeau—although contemporary—certainly adheres to the “rule” of Pope Saint John Paul II.

Corpus Christi Watershed · July 26, 2022

Breaking! • Official Release of “Stowe Missal Eucharistic Motets” for 3 voices (Kevin Allen)

These pieces for “SAB” (Soprano, Alto, Bass) were commissioned by our organization for the National Eucharistic Revival.

Jeff Ostrowski · March 25, 2022

PDF Download • “Missa Philomena” (Philippe Verdelot) — Part 1 has been added.

We already released Part 2; today we release Part 1.

Jeff Ostrowski · December 15, 2021

PDF Download • Carol based on “The First Nowell”

I recorded all the voices, to demonstrate how it sounds…

Jeff Ostrowski · November 28, 2021

“O Come, O Come Emmanuel” • Original Setting in Latin for Two Voices

Many centuries ago, this was a “trope” (poetic extension) for a Responsory.

Jeff Ostrowski · November 15, 2021

Fabulous Repertoire For Tiny Choirs!

During November, our parish sings hymns to Christ the King, All Saints, and the Faithful Departed.

Follow the Discussion on Facebook

Jeff Ostrowski · November 12, 2021

“For The Souls In Purgatory” • A Catholic Hymn

The month of November is dedicated to the souls in Purgatory.

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Jeff Ostrowski · November 3, 2021

PDF Download • “Four Easy Pieces” (Smaller Choirs)

Including more information about the “Pope Pius XII Hymnal.”

Follow the Discussion on Facebook

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Corpus Christi Watershed

President’s Corner

    PDF Download • Communion for Sunday
    The COMMUNION ANTIPHON with fauxbourdon psalm verses for this coming Sunday (3 May 2026) is elegant and poignant. It’s such a shame it only comes every three years. This piece—along with all the musical scores for this coming Sunday, which is the 5th Sunday of Easter (Year A)—can be downloaded free of charge from the flourishing feasts website. By the way, how is it already 2026?
    —Jeff Ostrowski
    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

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

“For me, religious music ceased with the sixteenth century. The fresh, childlike souls of that time alone expressed their vehement, untainted fervor in music free from worldliness. Since then we have had pious musical improvisations more or less made for show. That wonderful man Johann Sebastian Bach only escaped because of his natural genius. He built harmonic edifices as a devout architect and not as an apostle.”

— Claude Debussy (1862-1918)

Recent Posts

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

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