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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 · March 29, 2026

Fulton J. Sheen • “24-Hour Catechism”

(11 of 50) “Most Holy Trinity”

Jeff Ostrowski · March 28, 2026

Music List • (Palm Sunday, 2026)

Readers have expressed interest in examining my “music list” for this coming Sunday.

Jeff Ostrowski · March 28, 2026

Easter • Would You Sing This Hymn?

Should this be added to the “pernicious hymn pairing” collection?

Jeff Ostrowski · March 24, 2026

Pipe Organ “Answers” in Plainsong?

Some might be a bit confused as to why it says the organ “answers” in Plainsong.

Jeff Ostrowski · March 24, 2026

“Gregorian Chant Quiz” • 24 March 2026

How well do you know your Gregorian hymns?

Jeff Ostrowski · March 23, 2026

“Versions of the Psalter” • Jeff Interviews Top Biblical Scholar: Dr. Mark Giszczak

Including a special release—“Rare as a Unicorn”—Pius XII Psalter in Latin and English (1,545 pages).

Jeff Ostrowski · March 21, 2026

PDF Download • “Ubi Caritas” (SATB)

A wonderful option for smaller choirs.

Jeff Ostrowski · March 20, 2026

Music List • (5th Sunday of Lent)

Readers have expressed interest in examining my “music list” for this coming Sunday.

Jeff Ostrowski · March 19, 2026

Music List • (Holy Thursday, 2026)

Readers have expressed interest in examining my “music list” for Maundy Thursday.

Jeff Ostrowski · March 19, 2026

“O Escam Viatorum” • (Holy Thursday)

I was way off the mark!

Jeff Ostrowski · March 19, 2026

PDF Download • Simplified Keyboard Accompaniments for Lenten Hymns

There’s nothing wrong with simplicity—so long as the music itself is inspired, memorable, dignified, and singable.

Jeff Ostrowski · March 17, 2026

Ending Good Friday on “Mi” … ?

I’ve always loved this variant.

Jeff Ostrowski · March 16, 2026

“Innsbruck Hymn” • Bach Saint Matthew Passion

Singers just love this melody!

Jeff Ostrowski · March 16, 2026

Stumped by “Episcopalian Hymnal” (1910)

Some consider this 1910 tome the greatest Episcopalian Hymnal ever printed.

Jeff Ostrowski · March 16, 2026

Eucharistic Hymns for Your Choir

From Los Angeles!

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Organ Accompaniment”
    Over the past few years, I’ve been harmonizing all the vernacular plainsong Introit settings by the CHAUMONOT COMPOSERS GROUP. This coming Sunday—10 May 2026—is the 6th Sunday of Easter (Year A). The following declaration will probably smack of “blowing my own horn.” However, I’d rank this accompaniment as my best yet. In this rehearsal video, I attempt to sing it while simultaneously accompanying myself on the pipe organ. The musical score [for singers] as well as my organ accompaniment can be downloaded free of charge from the flourishing feasts website.
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 4 May 2026
    A few days ago, the CORPUS CHRISTI WATERSHED Facebook page posted this Gregorian Chant quiz regarding a rubric for the SEQUENCE for the feast of Corpus Christi: “Lauda Sion Salvatórem.” There is no audience more intelligent than ours—yet surprisingly nobody has been able to guess the rubric. Drop me an email with the right answer, and I’ll affirm your brilliance to everyone I encounter!
    —Jeff Ostrowski
    “Rare Photographs” • Hannibal Bugnini
    On 2 September 2025, we included in this article extremely rare photographs of Archbishop Hannibal Bugnini taken in Iran circa 1979. Bugnini had initially been banished by the pope to Uruguay, but he refused to obey. [This is interesting, since Bugnini relied upon ‘blind obedience’ when it came to modifications of the ancient liturgy.] After he refused to obey the order from the pope, Hannibal Bugnini was banished to Iran. You can also watch a short video of Hannibal Bugnini in Iran, dated 10 November 1979. That’s about a week after the USA embassy hostage crisis began in Tehran, and Pope Saint John Paul II had sent the leader of the Iranian Revolution a special letter.
    —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

“When there are women members, the choir’s place is to be outside the sanctuary.”

— “Musicam Sacram” (5 March 1967)

Recent Posts

  • PDF Download • “Organ Accompaniment”
  • “Gregorian Chant Quiz” • 4 May 2026
  • “Rare Photographs” • Hannibal Bugnini
  • “Regina Caeli” • More Than You Wanted To Know
  • Music List • “5th Sunday of Easter” (Year A)

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