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Corpus Christi Watershed

We’re a 501(c)3 public charity established in 2006. We have no endowment, no major donors, no savings, and run no advertisements. We exist solely by the generosity of small donors.

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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 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 · 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 · 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

Not Your Grandmother’s Creed

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

Jeff Ostrowski · January 26, 2016

Chosen Your Easter Alleluia Yet?

It’s time—and here’s one you’ll love.

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

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

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

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 14, 2016

Staggering Canonic Setting • “Gloria” from Mass III

By the French Roman Catholic composer, Raphaël Mercier (d. 1953).

Jeff Ostrowski · January 11, 2016

Gregory Ceurvorst Harmonizing The Chabanel Psalms

I saw something cool on YouTube.

Jeff Ostrowski · January 11, 2016

Ludwig Passini: “Canons in the Church of St. Peter”

Their garments resemble the “winter” cappa magna.

Jeff Ostrowski · January 9, 2016

VIDEO • Archbishop Fulton J. Sheen & William F. Buckley

In 1971, Sheen appeared on “Firing Line” and spoke about St. Augustine.

Jeff Ostrowski · January 9, 2016

Letter To The FSSP Choir In Los Angeles

There’s something less scary you can do to help build up God’s Kingdom.

Jeff Ostrowski · January 9, 2016

Musical Resources • Feast of the Holy Family (Extraordinary Form)

“O Lord Jesus Christ, who—in the days of thy sub­jec­tion to Mary and Joseph—didst consecrate home life by ineffable acts of virtue…”

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Corpus Christi Watershed

President’s Corner

    Luis Martínez Must Go!
    Sevilla Cathedral (entry dated 13 December 1564): The chapter orders Luis Martínez, a cathedral chaplain, to stay away from the choirbook-stand when the rest of the singers gather around it to sing polyphony—the reason being that “he throws the others out of tune.” [Excerpt from “The Life of Father Francisco Guerrero.”]
    —Jeff Ostrowski
    Urgent! • We Desperately Need Funds!
    A few days ago, the president of Corpus Christi Watershed posted this urgent appeal for funds. Please help us make sure we’re never forced to place our content behind a paywall. We feel it’s crucial that 100% of our content remains free to everyone. We’re a tiny 501(c)3 public charity, entirely dependent upon the generosity of small donors. We have no endowment and no major donors. We run no advertisements and have no savings. We beg you to consider donating $4.00 per month. Thank you!
    —Jeff Ostrowski
    “Booklet of Eucharistic Hymns” (16 pages)
    I was asked to create a booklet for my parish to use during our CORPUS CHRISTI PROCESSION on 22 June 2025. Would you be willing to look over the DRAFT BOOKLET (16 pages) I came up with? I tried to include a variety of hymns: some have a refrain; some are in major, others in minor; some are metered, others are plainsong; some are in Spanish, some are in Latin, but most are in English. Normally, we’d use the Brébeuf Hymnal—but we can’t risk having our congregation carry those heavy books all over the city to various churches.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

“Gerard Manley Hopkins once argued that most people drank more liquids than they really needed and bet that he could go without drinking for a week. He persisted until his tongue was black and he collapsed at drill.”

— A biography of Fr. Gerard M. Hopkins (d. 1889)

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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.

The election of Pope Leo XIV has been exciting, and we’re filled with hope for our apostolate’s future!

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President’s Message (dated 30 May 2025)

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