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Corpus Christi Watershed

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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 · December 20, 2021

At Least This Is Clear!

Archbishop Roche, current head of the CDW, stated during his video interview as follows: “The Church has given us the celebration of the Mass in two forms. The Ordinary Form is the Mass that was developed under blessed Pope Paul VI in the 1960s. […] The Extraordinary Form is another expression, which is older than […]

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Jeff Ostrowski · December 20, 2021

“Communion Service” for the Extraordinary Form?

This statement by the “Una Voce” president strikes me as inaccurate.

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Jeff Ostrowski · December 18, 2021

Archbishop Roche: What the Ordinary Form “has to learn” from the Extraordinary Form

“The Extraordinary Form is another expression (older than the 1969 Missal) and is a valid expression of the Church’s liturgy.” —Arthur Roche

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Jeff Ostrowski · December 15, 2021

PDF Download • Carol based on “The First Nowell”

I recorded all the voices, to demonstrate how it sounds…

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Jeff Ostrowski · December 15, 2021

“Christmas” … or … “Xmas” ?

I remember hearing folks say (erroneously): “Don’t cross out Christmas!”

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Jeff Ostrowski · December 12, 2021

PDF Download • Vespers Organ Accompaniment — “Our Lady of Guadalupe” (12 December)

Vatican II said: “Pastors must see to it that Vespers is celebrated in parishes on Sundays and the more solemn feasts” (SC §100).

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Jeff Ostrowski · December 9, 2021

Archbishop Lefebvre Pushed For Vernacular Readings?

Louis Bouyer—the priest chosen to compose “Eucharistic Prayer II”—condemned the liturgical reforms when he saw the results.

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Jeff Ostrowski · December 6, 2021

Book Review! • “Society for Catholic Liturgy”

Dr. Aaron James has a double doctorate from a reputable conservatory, which is quite impressive!

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Jeff Ostrowski · November 29, 2021

PDF Booklet • First Sunday of Advent Vespers (Organ Accompaniment) — Draft Copy

It may be an ugly booklet, but it got the job done yesterday.

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Jeff Ostrowski · November 28, 2021

“O Come, O Come Emmanuel” • Original Setting in Latin for Two Voices

Many centuries ago, this was a “trope” (poetic extension) for a Responsory.

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Jeff Ostrowski · November 16, 2021

16 November 2021 • So Valuable!

If people only knew about this this website, they would be amazed. It is called the “snippets” index, and I could not live without it. We’ve tried everything we can think of to let people know about it—and we’ll keep trying—but even some of our most faithful readers don’t realize that hidden treasure!

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Jeff Ostrowski · November 15, 2021

Fabulous Repertoire For Tiny Choirs!

During November, our parish sings hymns to Christ the King, All Saints, and the Faithful Departed.

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Jeff Ostrowski · November 12, 2021

“For The Souls In Purgatory” • A Catholic Hymn

The month of November is dedicated to the souls in Purgatory.

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Jeff Ostrowski · November 11, 2021

11 November 2021 • “Iste Confessor” Hymn

The brief little SATB piece, O Pater Sancte (PDF), has been requested by many. The full title is O Pater Sancte, Mitis Atque Pie (“Father most holy, gracious and forgiving”). The melody occurs many times in the The Saint Jean de Brébeuf Hymnal—including on page 724 with a fabulous translation by Monsignor Knox. The tune […]

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Jeff Ostrowski · November 11, 2021

Cardinal Cupich Responds To Our Article!

Cardinal Antonelli: “I have the impression that much has been conceded to the Protestant mentality, especially in matters regarding the sacraments.”

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Corpus Christi Watershed

President’s Corner

    Oldest Latin Eucharistic Hymn
    The Church’s oldest Latin Eucharistic hymn is featured in the Brébeuf Hymnal. Indeed, the legendary Father Adrian Fortescue made a translation of it—matching the original’s meter—which was elevated by the Brébeuf team. For years, we’ve been working on a Spanish hymnal: “Cantoral del Padre Antonio Daniel.” The progress has been slow but steady, and we encourage anyone fluent in Spanish to consider joining the proofreading team. A few days ago, my wife helped me record a rehearsal video for this Spanish version of the Church’s oldest Latin Eucharistic hymn.
    —Jeff Ostrowski
    Rare Plainsong Accompaniments
    Our contributor, Veronica Brandt, went deep into Australia to take photographs of organ accompaniments for Gregorian Chant. Some consider these peculiar PLAINSONG ACCOMPANIMENTS—with 3-part harmonies by Barcelona Cathedral organist, Father Josep Muset i Ferrer—to be the rarest in the world. Click here to learn more. Thanks Veronica! 😊
    —Jeff Ostrowski
    “Hidden Chant” • For the Ordinary Form

    Not even the magnificent “GregoBase”—which is incredibly comprehensive—realizes music for this antiphon was published by the Vatican in the 1930s.

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    —Jeff Ostrowski

Quick Thoughts

    “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
    Time and Again We Are Asked…
    John Baptist Singenberger (d. 1924) was a central figure of Catholic Church music. In this utterly fascinating excerpt (Single-Page PDF), Singenberger writes: Time and again we are asked: “Is the Gregorian chant to be accompanied by the organ?” As a young student in Saint Gall, Singenberger befriended SEBASTIAN GEBHARD MESSMER, the future Archbishop of Milwaukee (Wisconsin). The two graduated together in 1861. The school they attended (Saint George’s Seminary) was a “seminary”—but in the older European sense. In other words, it provided a classical education without necessarily leading to ordination. Singenberger remained a layman his whole life, but Messmer was eventually made archbishop—by Pope Saint Pius X—of the very archdiocese in Wisconsin where Singenberger would spend his American career, giving him a powerful ecclesiastical ally.
    —Jeff Ostrowski
    “Reminder” — Month of June (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). Since we were founded in 2006, not one of our board members has ever accepted any remuneration whatsoever—not a penny. 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

Random Quote

“But when all aids to a good translation of the Psalms have been made use of, it often happens, from various causes, that some words or phrases of a Psalm remain obscure or unintelligible to the reader. Then it is that explanatory Notes become necessary.”

— Father Charles J. Callan (who founded “The Homiletic and Pastoral Review”)

Recent Posts

  • Two Ways to Defile a Hymn • (And How Not To)
  • “Reader Feedback” • 22 June 2026
  • These Photographs Are Utterly Astounding !
  • Public Criticism of Jeff Ostrowski’s Singing Voice • Also: “Dich König loben wir”
  • Oldest Latin Eucharistic Hymn

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