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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 · July 27, 2016

Musical Resources • 11th Sunday after Pentecost

“…pour forth Thy mercy upon us, to take away from us those things which our conscience feareth…”

Jeff Ostrowski · July 27, 2016

Letter To A Volunteer Choir…

The singers know their individual contribution is essential.

Jeff Ostrowski · July 26, 2016

Victoria Alleluia • Extraordinary & Ordinary Form

If your priest requires the congregation sing the “Alleluia,” there’s a nice way to do this.

Jeff Ostrowski · July 24, 2016

Musical Resources • 10th Sunday after Pentecost

“O God, Who dost chiefly manifest Thy power in forbearance and mercy…”

Jeff Ostrowski · July 20, 2016

PDF Download • St. Cecilia Hymnal (1937)

Like all the books we release, this extremely rare hymnal was previously unavailable until we scanned and uploaded it.

Jeff Ostrowski · July 17, 2016

Showdown in Arkansas over “Ad Orientem”

The Bishop of Little Rock has sent a letter (14 July 2016) forbidding his priests to celebrate Mass “ad orientem.”

Jeff Ostrowski · July 16, 2016

Musical Resources • 9th Sunday after Pentecost

“…and that Thou mayest grant their desires to them, make them ask only for things that please Thee…”

Jeff Ostrowski · July 13, 2016

SATB “Agnus Dei” after Fr. Gregorio Allegri (d. 1652)

Without question, the most popular piece I ever “wrote.”

Jeff Ostrowski · July 13, 2016

Shocking Developments From Westminster

If Cardinal Nichols had simply sent a letter saying why he prefers “versus populum,” I believe that would have been a better choice.

Jeff Ostrowski · July 12, 2016

Did Fr. Lombardi Contradict Cardinal Sarah?

Perhaps a better phrase would be Bishop Gracida’s version: “Renewal of the Renewal.”

Jeff Ostrowski · July 9, 2016

“Quam Singulari” • Decree on First Communion (1910)

Pope St. Pius X wanted this decree to be read each year from the pulpit by all Catholic priests.

Jeff Ostrowski · July 6, 2016

Sensational Hymn for St. Joseph … with Modern Polyphony!

We’ll be singing this piece a lot because our priest has a special devotion to St. Joseph.

Jeff Ostrowski · July 2, 2016

“Confiteor” Before Communion • Should It Be Done?

Six reasons in favor of the “Second Confiteor” and my thoughts.

Jeff Ostrowski · June 29, 2016

“Salve Virgo Singularis” • For Three Voices

I cannot imagine a more powerful text.

Jeff Ostrowski · June 27, 2016

Audio Samples • Can A Volunteer Choir Sing Excellent Music At Mass?

If you think we weren’t nervous to sing before so many … think again!

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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

What earlier generations held as sacred, remains sacred and great for us too, and it cannot be all of a sudden entirely forbidden or even considered harmful.

— Pope Benedict XVI, Letter accompanying “Summorum Pontificum” (7/7/07)

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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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