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Corpus Christi Watershed

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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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 · April 10, 2021

PDF Download • Vespers for Holy Thursday?

“Custom preserves many things in liturgy after their first reason has ceased.” —Father Adrian Fortescue

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Jeff Ostrowski · April 6, 2021

PDF Download • “Sanctus for Three Voices” (Soprano, Alto, and Bass)

Can Gregorian Chant be harmonized? Does it work? Monsignor Jules Vyverman demonstrates for us!

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Jeff Ostrowski · April 6, 2021

Live Recording • “Jesus My Lord, My God, My All”

Vernacular hymns at Communion during EF High Mass—your thoughts?

Jeff Ostrowski · April 6, 2021

5 April 2021 • When Girls Sing

Covid restrictions here in California are still extremely severe—switching “two weeks to flatten the curve” into “two years to flatten the curve.” Since 2020, we’ve had police breaking into our church to check if everyone is wearing a mask…even when only 5-6 people are present! But we were allowed to have a small percentage of […]

Jeff Ostrowski · April 4, 2021

(Hymn) • “Jesus Christ Is Risen Today”

…including rehearsal videos for each individual voice.

Jeff Ostrowski · April 2, 2021

Thomas à Kempis says …

From a manuscript created circa A.D. 1497.

Jeff Ostrowski · March 29, 2021

PDF Download • “Hymn to Christ the King” (SATB)

Also included: Five (5) rare rhyming renderings into English.

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Jeff Ostrowski · March 29, 2021

29 March 2021 • FEEDBACK

“E.S.” in North Dakota writes: “I just wanted to take a moment to say THANK YOU for all the hard work you have put—and continue to put—into your wonderful website. In the past two years, my parish has moved from a little house basement into a brand new church and gone from a few families […]

Jeff Ostrowski · March 29, 2021

29 March 2021 • Condemned?

On Palm Sunday, the Passion was read. Immediately after mention is made of the betrayal by Judas, the Holy Eucharist is introduced. Is this not a condemnation of “Christians” who deny the Church teaching on the SANCTISSIMUM? Here is Matthew 26: And Judas that betrayed him, answering, said: “Is it I, Rabbi?” He saith to […]

Jeff Ostrowski · March 25, 2021

Never Released Before! • Unique Version of “O Sacred Head Surrounded” (SATB)

What is a Catholic Hymnal? How old are these hymns?

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Jeff Ostrowski · March 24, 2021

Liturgical Translation: Your Thoughts?

The National Association of Pastoral Musicians has created “liturgical” materials honoring Buddha and Darwin.

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Jeff Ostrowski · March 22, 2021

Church Music’s Best Kept Secret!

Here’s a 20-second audio clip (live) from yesterday. It’s the INTROIT from Passion Sunday, when the Gospel says Jesus “hid himself” because the crowds wanted to kill Him…after He said He was greater than Abraham. Our parish uses The Saint Jean de Brébeuf Hymnal for all sung Masses, and we cherish the choral supplement because […]

Jeff Ostrowski · March 20, 2021

“Glad Trad” vs. “Rad Trad”

We are called to do something very strange…

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Jeff Ostrowski · March 19, 2021

Saint Joseph + Baby Jesus In A Walker

This luscious manuscript was created about A.D. 1453 for a French Noblewoman.

Jeff Ostrowski · March 18, 2021

18 March 2021 • “Close To Death”

When it seemed Father Jean de Brébeuf and his companions were about to meet death on 28 October 1637, he wrote a letter to his superiors. Here’s an excerpt: “It is a singular favor that His Goodness gives us, to allow us to endure something for love of Him. Now it is that we consider […]

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Corpus Christi Watershed

President’s Corner

    💲 5.00 💵
    Our tiny 501(c)3 nonprofit organization exists solely by generous readers who donate $5.00 per month. We have no endowment; we have no major donors; we run no advertisements; we have no savings. A donor wrote to us: “I so appreciate all you do and have done, and your generosity is unprecedented. I am honored to be able to make a monthly contribution.” Another monthly donor says: “Thank you for everything CC Watershed does. We are able to add so much solemnity to Holy Mass due to the resources made available here.” Can you spare a few dollars each month to help us survive?
    —Corpus Christi Watershed
    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski

Quick Thoughts

    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    “Reminder” — Month of January (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). 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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

It was thought important that the song should actually accompany the distribution of Communion. A Carolingian explanation of the Mass remarks that during the Communion “soft melody should touch the ear [of the faithful] so that hearing this sound they would busy themselves less with distracting thoughts and … their hearts would be moved to humble love for that which they receive.”

— Father Josef Andreas Jungmann

Recent Posts

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  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”

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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.