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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 29, 2022

“Exceeded Every Expectation!” • Mr. O’Brien’s Review

“I attended Symposium this year, and was absolutely blown away.”

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Jeff Ostrowski · June 28, 2022

Photograph • Dom André Mocquereau (d. 1930)

Dom Mocquereau, prior to becoming a monk, was a soldier in the Franco-Prussian War.

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Jeff Ostrowski · June 26, 2022

Our Daily Prayer • Sacred Music Symposium 2022

“My God, my Father, and my All, I am ready and willing to accept from Thy hands this day…”

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Jeff Ostrowski · June 19, 2022

PDF Download • “Polyphony For Choirs” (262 Pages)

Enjoy this tiny “reward” for your phenomenal response to our fundraiser.

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Jeff Ostrowski · June 18, 2022

What. Did. My. Eyes. Just. See.

I am bewildered.

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Jeff Ostrowski · June 14, 2022

“Stowe Missal Eucharistic Motets” • For 3 Voices

This melody won’t leave your head—it keeps playing “on repeat.”

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Jeff Ostrowski · June 12, 2022

PDF Download • Trinity Sunday (22 pages)

Feel free to download this Organ Accompaniment Booklet for Trinity Sunday (Second Vespers). Notice how the modes progress by number. Psalm 1 is mode 1; Psalm 2 is mode 2; Psalm 3 is mode 3; Psalm 4 is mode 4; Psalm 5 is mode 5. I am told by an expert that other feasts (such […]

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Jeff Ostrowski · June 11, 2022

Composing Your Own Antiphons?

In the days before Vatican II, dioceses had their own special feast days.

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Jeff Ostrowski · June 11, 2022

10 June 2022 • “Official” rhythm of plainsong

I continue to search for the most beautiful way to present the “pure” Editio Vaticana scores. (Technically, the “pure” rhythm of the official edition is what everyone is supposed to use.) You can download my latest attempt, which is the Introit for this coming Sunday: Feast of the Most Holy Trinity. Because this is not […]

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Jeff Ostrowski · June 9, 2022

New Release! • “Missa de Beata Virgine” (Kevin Allen)

As singers performed this Kevin Allen piece, they wept—but crying is bad for singing technique!

Jeff Ostrowski · June 7, 2022

7 June 2022 • FEEDBACK

From Chelan, Washington: “CCWatershed is a God-sent resource that I can’t function without! Such great work by the team to bring beauty back to our liturgy!” From Gainesville, Florida: “I am so appreciative of the work, of my brothers and sisters in music!” From Troutman, North Carolina: “Keep up the excellent work in service of the Liturgy!”

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Jeff Ostrowski · June 7, 2022

“An Unknown Parishioner Approached Me…”

Can modern composers write hymns? Are they stirring?

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Jeff Ostrowski · June 5, 2022

PDF Download • (Organ Accompaniment)

I created this organ accompaniment booklet for organists who will accompany Vespers on Pentecost Sunday. Feel free to download it; it might give you some ideas or inspiration. Be warned: It looks pretty sloppy. (The organist is the only one who sees it.)

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Jeff Ostrowski · June 3, 2022

Revelation • “Re: The Official Rhythm”

A very intelligent singer admitted that only yesterday did he finally come to understand what a “melismatic mora vocis” is. Only yesterday did he come to understand the “white notes” (blank spaces). You can see the Introit for Pentecost Sunday only has two instances of MMV (“melismatic mora vocis”).

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Jeff Ostrowski · June 3, 2022

3 June 2022 • FEEDBACK

From Saint Petersburg, Florida: “Thank you so much for all of your tireless and selfless work in building up the Kingdom of God and Helping us on the path toward heaven! Your work for many years now has borne much fruit in my life and in the lives of whom I work with. May the […]

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Corpus Christi Watershed

President’s Corner

    Proportionalist Plainchant • (Documented)
    On this website, we believe: “If we don’t know where we came from, we can’t know where we’re going.” As a result, we often spend hours scanning old books of GREGORIAN CHANT (and organ accompaniments). We don’t claim those items are useful or desirable for today’s circumstances; the goal is understanding where we came from. Here is a fascinating musical score from the 19th century. At that time, it was believed that MENSURALISM (a.k.a. “proportionalism”) was the historically correct way to sing plainsong.
    —Jeff Ostrowski
    Garnier Alleluias • “Have They Moved?”

    We received an email asking whether the “Garnier Gospel Acclamations website” has…

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    —Jeff Ostrowski
    Absolutely ‘Perfect’ Voice-Leading?

    This brief passage seems (in my humble opinion) to be a delightful specimen.

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    —Jeff Ostrowski

Quick Thoughts

    “Predictable Rhymes?” • A Follow Up
    We received considerable correspondence regarding my article, Two Ways to Defile a Hymn. More specifically, what really raised certain people’s hackles was its follow-up article dealing with the keyboard accompaniment for the CHRIST THE KING HYMNAL. But to quote Eliza Doolittle: “Have I said anything I oughtn’t?” Please examine this PDF file and see whether you agree. Were the editors of the BRÉBEUF HYMNAL incorrect to insist upon sophisticated and clever rhymes, rather than mind-numbingly predictable rhymes?
    —Jeff Ostrowski
    ‘Ould’ But Not Good
    Dom Samuel Gregory Ould (note the spelling) was a Benedictine monk at FORT AUGUSTUS ABBEY in Scotland. As musician, organist, and composer, Dom Ould was highly regarded. Moreover, he was considered an authority on Gregorian Chant. But not everything found in an old book—or, in this case, an “Ould” book—is necessarily praiseworthy. Consider this page from Dom Ould’s hymnal. Do you see the rhymes? They offend severely by ABR (“Abuse By Reuse”) and are utterly predictable. In my recent article—Two Ways to Defile a Hymn—I addressed this topic.
    —Jeff Ostrowski
    “Reader Feedback” • 22 June 2026
    A reader wrote to us from Virginia: “I really appreciate the 23 harmonizations that you posted on CORPUS CHRISTI WATERSHED for the Daily, Daily, Sing to Mary hymn. I hope to find willing voices in our small Schola Cantorum to try the three-voice version. Carry on, sir! You’re doing the Lord’s work.” While we don’t know this gentleman personally, we note that he earned a Ph.D. (which demonstrates that our blog has something for everybody). 😊
    —Corpus Christi Watershed

Random Quote

At papal Masses, the regulations against tardiness were more stringent than at Masses celebrated by cardinals or bishops. Giovanni Maria Nanino records that any singer who is not in his place—and in his vestments—by the end of the repetition of the “Introit” will be fined eight vinti. At papal Vespers, the singer who is not present at the “Gloria Patri” of the first psalm pays a fine of fifty balocchi.

— Giovanni M. Nanino (d. 1607), Papal “Maestro di Cappella”

Recent Posts

  • “Plainsong Propers” • Fascinating 1980s Recordings
  • Proportionalist Plainchant • (Documented)
  • “First Things First” • The Order We’ve Reversed: Seven (7) Points for Consideration
  • Garnier Alleluias • “Have They Moved?”
  • PDF Download • 1950s Hand Missal including “Priest Photographs” at Mass (944 pages)

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Corpus Christi Watershed
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