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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

Articles

Jeff Ostrowski · August 1, 2021

“Homily: 10th Sunday after Pentecost” (EF) • Father Valentine Young, OFM

Unfortunately, this virtue often seems to be lacking in people who have high positions of authority.

Jeff Ostrowski · July 31, 2021

(29 Pages) • Free Organ Accompaniment Book — Draft copy

The following is what I will use to accompany the congregation tomorrow.

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Jeff Ostrowski · July 31, 2021

PDF Download • Vespers Booklet for This Sunday (draft)

Starting pitches are included!

Jeff Ostrowski · July 28, 2021

SATB Hymns • “Consors Paterni Luminis” (Translated to English)

Brave choir director posts *live* recording by a volunteer choir!

Jeff Ostrowski · July 26, 2021

“Shocking!” • What Vatican II said about Latin

Will the true defenders of Vatican II please stand up?

Andrea Leal · July 24, 2021

The Ordination and the Motu Proprio

Pope Francis dropped a bombshell – but around the world many Bishops continue to be faithful keepers of Tradition.

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Jeff Ostrowski · July 24, 2021

Protected: (Private) • “Symposium Faculty Eyes Only”

There is no excerpt because this is a protected post.

Jeff Ostrowski · July 23, 2021

Copyright Problems! • Vernacular Readings + “Traditionis Custodes”

Locations which celebrate the Traditional Latin Mass tend to be the marginalized groups, given “leftovers” that nobody else wants.

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Veronica Brandt · July 23, 2021

Top 3 Heart-warming Articles about the Latin Mass

Tired of dense theological issues and historical comparisons about the new Motu Proprio? Take a little time out to read some simpler reflections on the Latin Mass.

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Jeff Ostrowski · July 23, 2021

Traditionis Custodes • An “Attack” On The Traditional Latin Mass?

Now is certainly not the time for sensationalist language. However…

Jeff Ostrowski · July 20, 2021

“Traditionis Custodes” • Five (5) Brief Reflections

“Deliver us, Lord, from every evil: past, present, and to come.”

Keven Smith · July 19, 2021

7 Keys to Success with Graduale Renovatum

Here’s how to get the most out of this fantastic new resource for interpreting chant rhythm.

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Jeff Ostrowski · July 19, 2021

PDF Download • The “1965 Missal” (1,785 pages)

“Truly Perplexing” • Pope Francis’ Motu Proprio

Jeff Ostrowski · July 18, 2021

Restricting the Extraordinary Form? • Cardinal Ratzinger’s Video Interview

“We are today not another Church as 500 years ago; it’s always the same Church.” —Cardinal Ratzinger on EWTN

Jeff Ostrowski · July 17, 2021

Important Reminder from Pope Saint John XXIII

People are talking about “liturgy wars” again…

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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

“And thus, when we renounce for Thee | Its restless aims and fears, | The tender mem’ries of the past, | The hopes of coming years, | Poor is our sacrifice, whose eyes | Are lighted from above; | We offer what we cannot keep, | What we have ceased to love.”

— Blessed John Henry Cardinal Newman

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.