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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 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.

Jeff Ostrowski · January 26, 2016

Not Your Grandmother’s Creed

Composer David Haas posted a striking proclamation on his Facebook page.

Jeff Ostrowski · January 24, 2016

Musical Resources • Septuagesima Sunday (Extraordinary Form)

Yet the laborer called at the eleventh hour does not taste the joy reserved to one who has “worked and suffered without reckoning the hours.”

Jeff Ostrowski · January 19, 2016

| Part 3 of 3 | • “Kyrie Eleison” (SATB) within the reach of any choir!

Only one word describes Guerrero’s musical genius: fearsome.

Jeff Ostrowski · January 17, 2016

The Pope Who Had … A Child?

Then the Pope declared that it was the motet’s words—not its melody—which annoyed him.

Jeff Ostrowski · January 17, 2016

Musical Resources • 2nd Sunday after Epiphany (Extraordinary Form)

“Sanctify, O Lord, the gifts we offer, and purify us from the stains of our sins…”

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Corpus Christi Watershed

President’s Corner

    Season’s End Repertoire
    Looking at the REPERTOIRE SHEET until the end of the choral season, I see that I’ve fallen behind schedule. (The last three months have been extraordinarily busy.) As you know, I have been providing organ harmonies for all the ENTRANCE CHANTS—as well as rehearsal videos—and you can see I’m behind where I planned to be. Now I must make up lost ground. However, the choir picks up the ENTRANCE CHANT with ease, so I’m sure it will all work out. My ‘unofficial’ harmonizations are being posted each week at the flourishing feasts website.
    —Jeff Ostrowski
    PDF Download • “Funeral Procession”
    From a mediæval Book of Hours, I was sent this glorious depiction of a Roman Catholic funeral procession by Simon Bening (d. 1561). The image resolution is extremely high. I’m not sure I know of a more beautiful illustration of a mediæval church. And I love how the servers are wearing red and pink cassocks!
    —Jeff Ostrowski
    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

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

Re: Low Mass: “It is desirable that in read Masses on Sundays and feast-days, the Gospel and Epistle be read by a lector in the vernacular for the convenience of the faithful.”

— 1958 document, issued under Pope Pius XII

Recent Posts

  • “Translating the Bible” • Msgr. Ronald Knox (1953)
  • Season’s End Repertoire
  • PDF Download • “Funeral Procession”
  • Re: The “Correct” Way To Sing Gregorian Chant
  • PDF Download • Ascension “Entrance Chant”

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