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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

President's Corner

Jeff Ostrowski · December 10, 2024

Re: Sacred Music Symposium 2025

Since a new month has arrived, it’s my pleasure to remind you that…

Jeff Ostrowski · December 8, 2024

“Entrance Chant” • 3rd Sunday of Advent

This Introit is in the first mode.

Jeff Ostrowski · December 7, 2024

For The Record …

It strikes me as quite “Adventy”—for lack of a better term.

Jeff Ostrowski · December 7, 2024

PDF • “Advent Kyrie Accompaniment”

Kyrie XVII: “In dominicis Adventus et Quadragesimae.”

Jeff Ostrowski · December 6, 2024

Music List • (Immaculate Conception)

Readers have expressed interest in perusing the “music list” I’ve prepared for this feast.

Jeff Ostrowski · December 3, 2024

Organ Accompaniment • “Kyrie IV”

This was inspired by Florentinus Peeters (d. 1986).

Jeff Ostrowski · December 2, 2024

Which Gospel Acclamations?

Some have asked which version…

Jeff Ostrowski · November 26, 2024

“Entrance Chant” • Immaculate Conception

This Introit is in mode iii, which some consider the most beautiful.

Jeff Ostrowski · November 25, 2024

How Sharp Are Your Eyes?

The feast of the Immaculate Conception contains a typo.

Jeff Ostrowski · November 22, 2024

“Music List” • (Christ the King Sunday)

Readers have expressed interest in perusing the “music list” I’ve prepared for this coming Sunday.

Jeff Ostrowski · November 19, 2024

“Entrance Chant” • Christ the King

The feast of Christ the King—a completely modern feast—was added in 1925.

Jeff Ostrowski · November 16, 2024

“Music List” • (33rd Sund. Ordinary Time)

Readers have expressed interest in perusing the “music list” I’ve prepared for this coming Sunday.

Jeff Ostrowski · November 15, 2024

Lectionary Errors

Why even mention such a thing? Everybody makes mistakes, right?

Jeff Ostrowski · November 14, 2024

PDF • SATB Enhancement (“Our Father”)

“As the congregation sings their part, the choir “enhances” them with polyphony. This is genius!” — Veronica Moreno

Jeff Ostrowski · November 12, 2024

“Entrance Chant” • Sunday (17 Nov. 2024)

This Introit is in the sixth mode (known as the “peaceful” mode).

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Primary Sidebar

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

“Gloria, Credo, etc., may not be broken into detached fragments; it is wrong to omit or hurry over the Proper of the day; it is not permitted to substitute organ playing for the Proper; it is wrong to use, however briefly, themes from theatrical or dance music, from popular songs, love-songs, comic songs; drums, cymbals, piano, bag-pipes are too noisy for Church use .”

— Pope Leo XIII (25 September 1884))

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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