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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 · February 16, 2016

Something That Would Fix So Much … But Nobody Mentions It

Is this “tacit” approval really “imaginary” approval?

Jeff Ostrowski · February 15, 2016

“Credo for Two Voices” • Gustaaf Nees (d. 1965)

This simple setting of Gregorian Credo IV uses organ, men’s voices, and women’s voices.

Jeff Ostrowski · February 14, 2016

Musical Resources • 1st Sunday of Lent (EF)

“We solemnly offer the sacrifice at the beginning of Lent, O Lord…”

Jeff Ostrowski · February 14, 2016

Canon Van Nuffel’s Setting Of Smoke Rising

“Smoke rises from the Mountain of Doom. The hour grows late, and Gandalf the Grey rides to Isengard seeking my counsel.”

Jeff Ostrowski · February 12, 2016

Motet • “Verbum Supernum” by Fr. Carlo Rossini

This SATB setting can be used during any liturgical season and has “O Salutaris Hostia” as one of its verses.

Jeff Ostrowski · February 11, 2016

“Audi Benigne Conditor” • Gregorian Hymn For Lent

The text is by St. Gregory the Great, who was Pope from 590-604.

Jeff Ostrowski · February 10, 2016

Decapitation of an Innocent Meadowlark

Do we remember that people in the pews often lack our musical background?

Jeff Ostrowski · February 9, 2016

Francisco Guerrero • “Hymn To The Sacred Trinity” (SATB with Plainsong)

Are you up for a special hymn challenge?

Jeff Ostrowski · February 8, 2016

What Are You Doing For Lent?

“The phone is our century’s plague. It destroys character, interaction, friendships, families, and our time. We are glued to these devices.”

Jeff Ostrowski · February 5, 2016

2016 • Sacred Music Symposium (Last Year’s)

We’re approaching capacity—if you’re interested, we need to hear from you soon!

Jeff Ostrowski · February 3, 2016

Exclusive Interview • Mr. Nancho Alvarez

“I must point out that the content of my site is totally free, granting open access to everyone.” —Nancho Alvarez

Jeff Ostrowski · February 2, 2016

Ridiculously Awesome Sanctus You’ve Never Heard

We are not allowed to sing Tropes in the Extraordinary Form, so I added that text in italics.

Jeff Ostrowski · February 2, 2016

PDF Download • Simple Pieces For Roman Catholic Church Choirs (345 Pages)

First published in 1901 by Emile Dethier, organist at the Grand Seminary in Liège, Belgium.

Jeff Ostrowski · January 31, 2016

Musical Resources • Sexagesima Sunday (EF)

“Grant, we humbly beseech Thee, almighty God, that those whom Thou refreshest with Thy sacraments…”

Jeff Ostrowski · January 26, 2016

Chosen Your Easter Alleluia Yet?

It’s time—and here’s one you’ll love.

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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

“We being many are one bread and one body, All who share the one bread and one cup. Vs. Thou hast prepared of thy sweetness for the poor, O God, who makest us to dwell in one mind in thy house. All who share the one bread and one cup.”

— Responsory (Matins for Corpus Christi) transl. by Fortescue

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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