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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 · May 4, 2017

Fulton J. Sheen • World’s Most Progressive Bishop?

Sheen replied: “Mr. President, I’m not the least bit impressed with your source.”

Jeff Ostrowski · April 30, 2017

Justice Antonin Scalia on Church Music

“I would go there Sunday morning and sing Palestrina, William Byrd, Mozart…this magnificent choral music.”

Jeff Ostrowski · April 25, 2017

Brace Yourself • “Raw” Recordings from Solemn Mass

There’s something remarkable about instances where the people involved don’t realize a recording is being made.

Jeff Ostrowski · April 23, 2017

PDF Download • “Compline for Sunday”

My ignorance vis–à–vis the 1962 Breviary will astound you…

Jeff Ostrowski · April 21, 2017

Musical Resources • “Quasimodo Sunday”

“Receive ye the Holy Ghost; whose sins you shall forgive, they are forgiven them, and whose sins you shall retain, they are retained.”

Jeff Ostrowski · April 21, 2017

Nine Questions About The Latin Mass You Were Too Embarrassed To Ask

When I first attended the Traditional Mass, I hated it.

Jeff Ostrowski · April 17, 2017

PDF Download • Last Minute Holy Saturday File

“The use of Psalm 150 is a change from the experimental Easter Vigil (1951-1955) in which Psalm 116 was used for Lauds.” —Msgr. McManus

Jeff Ostrowski · April 15, 2017

“Reproaches” for Good Friday (Recording)

The indispensable “Musician’s Guide to Good Friday,” including a 50-page PDF and rehearsal videos!

Jeff Ostrowski · April 13, 2017

Do these Holy Thursday rubrics strike you as odd?

I haven’t studied the situation enough to know with certainty.

Jeff Ostrowski · April 12, 2017

“Contemporary” Catholic Music • Is it truly dead?

Today we announce a special guest who will be present at the Sacred Music Symposium!

Jeff Ostrowski · April 12, 2017

Musical Resources • Holy Thursday (EF)

“O God, from Whom Judas received the punishment of his crime, and the thief the reward of his confession…”

Jeff Ostrowski · April 10, 2017

PDF Download • Booklet for Congregation

May I share a secret?

Jeff Ostrowski · April 10, 2017

Accompaniment: “Credo III” (Parochial Hymnal)

Easiest organ accompaniment to Credo III ever penned.

Jeff Ostrowski · April 7, 2017

Intensely Powerful • “Requiem” Production (FSSP)

I’ve never seen a more beautiful promo video.

Jeff Ostrowski · April 7, 2017

Musical Resources • Palm Sunday (1962) 1

“The multitude goeth forth to meet our Redeemer with flowers and palms, and payeth the homage due to a triumphant conqueror.”

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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

    “Reminder” — Month of Febr. (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. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    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
    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

Some are called not to much speaking, | nor to conversations about the Church, | but, rather, to a deep silence | and to a life hidden in the heart of the Church, | far from wrangling tongues, from speculations, and discord. […] This is the essence of a Eucharistic monastic life.

— Fr. Mark Daniel Kirby (Meditation on Colossians 3:3)

Recent Posts

  • Fulton J. Sheen • “24-Hour Catechism”
  • “Reminder” — Month of Febr. (2026)
  • Seminary Music Directors Gather in Houston
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  • Dom Pothier • Photo from 1904

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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.