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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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · April 7, 2024

Jeff Writes A Song About Dr. Weaver And Himself

This article—a “mini-dissertation” on syllabic plainsong—writes songs using the names of various CCW authors.

Jeff Ostrowski · April 7, 2024

Exiguous Performing Forces?

Even something simple can be wonderful.

Jeff Ostrowski · April 6, 2024

PDF Download • “Spanish Responsorial Psalm” (19th Sunday in Ordinary Time, Year B)

A lovely offering by the “Chaumonot Composers Group.”

Jeff Ostrowski · April 5, 2024

Confusion About This Responsorial Psalm

A serious typo in the Responsorial Psalm for the 17th Sunday in Ordinary Time, Year B.

Jeff Ostrowski · April 4, 2024

Jeff Ostrowski To Leave Los Angeles!

I believe Catholics have a right to attend Mass without being aurally assaulted.

Jeff Ostrowski · April 2, 2024

“Jesus Christ is Ris’n Today” (Simplified)

I hate hearing organists play wrong notes. I invite you to download this simplified organ accompaniment for hymn #699 in the Saint Jean de Brébeuf Hymnal. The hymn is “Jesus Christ Is Risen Today.” I’m toying with the idea of creating a whole bunch of these, to help amateur organists. The last one I uploaded was […]

Jeff Ostrowski · April 2, 2024

“Response to Dr. Weaver” • 2 April 2024

Catholic musicians must avoid being viewed as “esoteric freaks” who can’t agree on anything and spend their entire lives fighting about things nobody cares about.

Jeff Ostrowski · April 1, 2024

PDF Download • “Jeff’s Most Popular Choral Arrangement For Easter” (By Far)

My volunteer choir sang this arrangement during the offertory on Easter Sunday.

Jeff Ostrowski · March 31, 2024

“Strangest Of All…” • (Fortescue)

In his illustrious 1912 tome—The Mass: A Study Of The Roman Liturgy—Father Adrian Fortescue spoke of sequences, writing: “Strangest of all were the vernacular sequences in France and Germany, or those partly vernacular and partly Latin.” Our volunteer choir experimented with that on Holy Thursday, mixing Latin verses with an English refrain. For the record, […]

Jeff Ostrowski · March 27, 2024

“Saint Felix Creed” • Musical Setting for the Nicene Creed (Roman Missal, 3rd Edition)

Dedicated to my brother, Father Mark Ostrowski.

Jeff Ostrowski · March 26, 2024

Good Friday’s Dazzling (and Ancient) Hymn

Visit a random church on Sunday morning and ask parishioners basic questions…

Jeff Ostrowski · March 25, 2024

“Stabat Mater Dolorosa” • Four (4) Choral Settings

With a digression on ‘drab’ modern architecture.

Jeff Ostrowski · March 25, 2024

William Byrd • “Mass for Five Voices”

Working with volunteers can be discouraging, but always remember there’s light at the end of the tunnel. Yesterday, during PALM SUNDAY MASS, our 100% volunteer choir pulled out the SANCTUS from William Byrd’s “Mass for Five Voices.”  This colossal performance was the result. (They literally didn’t know I was going to have them sing that […]

Jeff Ostrowski · March 22, 2024

“Victimæ Paschali Laudes” • Thirty-One (31) Different Versions — Including Organ Accompaniments

This version by Father Adrian Fortescue is fascinating!

Jeff Ostrowski · March 22, 2024

“Reprehensible Chrism Mass” • (Do Not Click)

A disturbing video sent to us from the Diocese of Superior (Wisconsin).

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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

It was thought important that the song should actually accompany the distribution of Communion. A Carolingian explanation of the Mass remarks that during the Communion “soft melody should touch the ear [of the faithful] so that hearing this sound they would busy themselves less with distracting thoughts and … their hearts would be moved to humble love for that which they receive.”

— Father Josef Andreas Jungmann

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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