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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 · June 13, 2017

Nothing More Corny Than This

Arturo Benedetti Michelangeli plays Bach’s Toccata and Fugue in d minor…

Jeff Ostrowski · June 12, 2017

First Solemn Mass • Fr. Joseph Favole, FSSP

Capstone to the upcoming Sacred Music Symposium!

Jeff Ostrowski · June 11, 2017

Benedictus has been posted!

Extremely short blog post…

Jeff Ostrowski · June 3, 2017

Musical Resources • Pentecost Sunday

“Light most blessèd, shine on the hearts of Your faithful—even into their darkest corners…”

Jeff Ostrowski · June 3, 2017

Musical Resources • Pentecost Sunday 1

“Light most blessèd, shine on the hearts of Your faithful—even into their darkest corners…”

Jeff Ostrowski · May 30, 2017

Psalm Tones Beyond A Doubt

You will want to download this PDF.

Jeff Ostrowski · May 25, 2017

Horrible Hymn Rhymes

“Anyone who sought thee, or made to thee his moan…”

Jeff Ostrowski · May 23, 2017

Rehearsal Videos • “Sanctus & Hosanna” (Guerrero)

Once upon a time, Catholic composers were trained from birth in a special art of musical composition…

Jeff Ostrowski · May 18, 2017

Archbishop Sheen on Liturgy & Plainchant Choirs

“Sisters in pants distribute communion, while priests sit idle in the sanctuary. This ‘option’ results from a decay of the reverence for the Lord’s Presence.” —Fulton J. Sheen (1976)

Jeff Ostrowski · May 17, 2017

Rehearsal Videos • Guerrero “Agnus Dei” (SSATB)

Do you understand why I only apologize once—and not twice—for the Soprano line?

Jeff Ostrowski · May 17, 2017

Rehearsal Videos • “Ave Sacer Christi Sanguis”

Precious few modern masterpieces exist…but this motet by Kevin Allen is one.

Jeff Ostrowski · May 16, 2017

EWTN Video • Priestly Fraternity of Saint Peter

Two members talk about their new CD, “Requiem.”

Jeff Ostrowski · May 10, 2017

Musical Resources • 4th Sunday after Easter (1962)

“…He shall not speak of Himself; but what things soever He shall hear, He shall speak…”

Jeff Ostrowski · May 9, 2017

Guerrero’s Gloria from “Missa Iste Sanctus”

Why Do We Produce Rehearsal Videos? And what made more than 600 people show up for Santa Barbara’s first Latin Mass in fifty years?

Jeff Ostrowski · May 4, 2017

Fulton J. Sheen • World’s Most Progressive Bishop?

Sheen replied: “Mr. President, I’m not the least bit impressed with your source.”

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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

“We went to the early Mass to receive Communion because there was no distribution of Communion at the High Mass. After Mass was the breakfast, which was always of better quality than on ordinary days. Then after the breakfast we all returned to church for the Solemn Mass.”

— Dom Ermin Vitry, OSB

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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