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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 · September 19, 2015

“Agnus Dei” For Three Voices • Guillaume Dufay

…including a digression on why choirs hate Solfège.

Jeff Ostrowski · September 19, 2015

Musical Resources • 17th Sunday after Pentecost (Extraordinary Form)

“Very humbly, O Lord, we implore of thy majesty, that the holy mysteries we are celebrating … save us from transgressing in the time to come …”

Jeff Ostrowski · September 16, 2015

“The songs and hymns presently in use need to be reconsidered.”

“…it is important to avoid musical forms which, because of their profane use, are not conducive to prayer.”

Jeff Ostrowski · September 16, 2015

“Live” Recording Of Polyphonic Kyrie VIII

Last Sunday we sang a beautiful composition by Richard Rice.

Jeff Ostrowski · September 14, 2015

Fr. Jonathan Morris, Pit Bull Attack, & More

What you didn’t know about Fr. Jonathan Morris…

Jeff Ostrowski · September 10, 2015

Musical Resources • 16th Sunday after Pentecost (Extraordinary Form)

“May thy grace … cause us to be zealous at all times in the doing of good works.”

Jeff Ostrowski · September 8, 2015

Video Demonstration • “Do Choral Vowels Matter?”

Can you see the difference? Can you hear the difference?

Jeff Ostrowski · September 7, 2015

A New Edition Of The 1962 Missal?

Download these Propers for Saint Pio of Pietrelcina—according to the 1962 Missale Romanum!

Jeff Ostrowski · September 5, 2015

“Wearing The Cassock” • A Bishop Weighs In

“I think that all of us clerics should rethink our choice of clothing…” —Bishop René H. Gracida

Jeff Ostrowski · September 3, 2015

Rehearsal Videos • “Jesu Dulcis Memoria”

I first sang this marvelous piece as a freshman in college, under Dr. James F. Daugherty.

Jeff Ostrowski · September 2, 2015

Musical Resources • 15th Sunday after Pentecost (Extraordinary Form)

“May thine abiding loving-kindness, O Lord, cleanse and fortify thy Church…”

Jeff Ostrowski · August 29, 2015

The Ordinary Form’s Incredible Freedom

Here’s a chart with rubrics from the 1974 “Graduale” translated into English.

Jeff Ostrowski · August 27, 2015

Be Amazed By This Two-Minute Clip About Cathedrals!

Astounding video about how the Amiens Cathedral was saved by a medieval “iron band-aid.”

Jeff Ostrowski · August 26, 2015

PDF Download • Rossini’s “Canticum Novum” (1935)

A Collection of 115 Motets and Hymns, with an Easy Mass for Two Equal Voices.

Jeff Ostrowski · August 26, 2015

Musical Resources • 14th Sunday after Pentecost (Extraordinary Form)

“Reconciled for evermore to thy Church, do thou watch over her, O Lord…”

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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

«In the same quarter where he was crucified there was a garden.» (John 19:41) — The word “garden” hinted at Eden and the fall of man, as it also suggested through its flowers in the springtime the Resurrection from the dead.

— Fulton J. Sheen

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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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