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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

PDF Download

Veronica Moreno · September 28, 2024

Communion Antiphon • “For Any Mass?”

Rehearsal videos are included—and they’re pretty fantastic!

Jeff Ostrowski · September 27, 2024

PDF Download • “Offertories and Communion Hymns for Unison + Organ” (Carlo Rossini, 1951)

I provide three (3) reasons you’ll want to download this book immediately.

Jeff Ostrowski · September 24, 2024

“Entrance Chant” • For Sunday (29-Sep-2024)

This one’s in Mode 3, imitating the authentic Gregorian chant in a magnificent way.

Jeff Ostrowski · September 24, 2024

PDF Download • “Entrance Chant” in English (26th Sunday in Ordinary Time, Year B)

Sometimes one hears the objection: “But Gregorian Chant was not originally accompanied on the organ…”

Veronica Moreno · September 17, 2024

PDF Download • “Communion Antiphon” by Father Edgard de Laet — For Any Mass!

A musical setting for “An Alphabet of Right-doing” (as Monsignor Knox famously called it).

Jeff Ostrowski · September 16, 2024

“Entrance Chant” • For Sunday (22-Sep-2024)

This one’s in Mode 4—and it imitates the authentic Gregorian chant in a magnificent way.

Richard J. Clark · September 13, 2024

PDF Download • “The Saint John’s Gradual”

Free download of Saint John’s Gradual with Ecclesiastical Approbation from his Eminence Cardinal Seán O’Malley, O. F. M., Cap., Archbishop of Boston

Jeff Ostrowski · September 12, 2024

Music List • (24th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I have prepared for this coming Sunday.

Jeff Ostrowski · September 11, 2024

Musical Setting • “Confíteor Déo Omnipoténti”

The participants went nuts over this musical setting. They just couldn’t get enough of it!

Corpus Christi Watershed · September 11, 2024

Desperate Appeal • (11-Sep-2024)

On 11 September 2024, the president of CCWatershed released…

Jeff Ostrowski · September 10, 2024

PDF Download • “Entrance Chant” for the 24th Sunday in Ordinary Time (Plainchant in English)

Today I discuss a myth about accompanying plainsong on the pipe organ.

Jeff Ostrowski · September 6, 2024

“Spanish Entrance Hymn” • (You Might Enjoy This)

Javier R. wrote to us: “One thing that caught my eye—and which I’ve been wrestling with—is how to fit Hymns with Antiphons, especially during the entrance procession.”

Jeff Ostrowski · August 31, 2024

Musical Lineup • (22nd Sund. Ordinary Time)

Jeff’s musical lineup for Sunday, 1 September 2024.

Jeff Ostrowski · August 30, 2024

PDF • “Lamb of God” Harmonization

Harmonized—and carefully notated—in Spanish, English, and Latin.

Jeff Ostrowski · August 30, 2024

Leaked Document! • Comparison Chart—New Responsorial Psalms (“Abbey Psalms & Canticles”)

The NAB tried to use “overly casual” language—and the results are often an abomination.

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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

“The argument moves from the existence of the thing to the correctness of the thing: what is, ought to be. Or, a popular variant: if a thing is, it doesn’t make any difference whether it ought to be—the correct response is to adjust, to learn to live with the thing.”

— ‘L. Brent Bozell, Jr.’

Recent Posts

  • “Reminder” — Month of Febr. (2026)
  • Seminary Music Directors Gather in Houston
  • 💲 5.00 💵
  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”

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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.