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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 · August 25, 2015

SATB “Alleluia” By Palestrina • Brief, Easy, & Sumptuous

I dare you NOT to immediately assign this piece to your choir!

Jeff Ostrowski · August 25, 2015

A Most Astounding “Graduale” From 1909 … On Modern Staves!

University professors don’t sit around wondering whether they should teach the music of Tomás Luis de Victoria or Marty Haugen.

Jeff Ostrowski · August 23, 2015

Organ Accompaniment • “Christe Supreme”

When your choir isn’t ready for polyphony…

Jeff Ostrowski · August 22, 2015

The Weirdest Thing About Renaissance Motets

A priest named “Reuschius”…

Jeff Ostrowski · August 19, 2015

Chabanel Psalms … In Dutch?

The cantors do something I never thought of in this video…

Jeff Ostrowski · August 19, 2015

Musical Resources • 13th Sunday after Pentecost (Extraordinary Form)

“We have received, O Lord, thy heavenly sacrament…”

Jeff Ostrowski · August 18, 2015

Improve Your Parish’s Liturgy … Instantaneously!

“Until we are blue in the face, we could repeat what Vatican II said about Gregorian chant…”

Jeff Ostrowski · August 17, 2015

PDF Download • “Mount Mary Hymnal” (1937)

All 255 pages of this famous hymn book can now be downloaded as a PDF.

Jeff Ostrowski · August 13, 2015

Musical Resources • 12th Sunday after Pentecost (Extraordinary Form)

The “Testament of the Spirit” is the new and permanent covenant established by Jesus Christ between God and men.

Jeff Ostrowski · August 12, 2015

Cardinal Sarah’s Powerful Letter Available In English!

“Adoremus Bulletin” has uploaded a translation of the CDW Prefect’s document.

Jeff Ostrowski · August 11, 2015

Remarkable! • Amiens Cathedral During World War

There’s something scary about this image!

Jeff Ostrowski · August 11, 2015

Evelyn Waugh Requiem Panegyric Preached At Westminster By Fr. Caraman (21 April 1966)

“Evelyn was sad when he read of churches in which the old altar was taken down…”

Jeff Ostrowski · August 10, 2015

Carlo Rossini: “Exaltate Deum Hymnal” (1941)

115 Offertories, Motets, and Hymns for SATB choirs.

Jeff Ostrowski · August 9, 2015

Do You Like This German Hymn Tune?

Hymns in 3/4 can present problems, but this one really isn’t…

Jeff Ostrowski · August 7, 2015

Propers for the Assumption (15 August)

Videos, Scores, & Mp3 Files

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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

“It is profitable for me that shame hath covered my face so I may seek consolation in Thee rather than in men.” (From the Imitation of Christ by Father Thomas à Kempis)

— Cardinal Merry del Val’s Prayer-Book

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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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