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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

Thesaurus musicae sacrae

Jeff Ostrowski · November 29, 2023

PDF Download • “Eight Gregorian Psalm Tones” (Harmonized by Jeff Ostrowski)

Yesterday, I recorded a video demonstration of each Gregorian Chant tone.

Jeff Ostrowski · November 12, 2023

(14 Examples) • Jeff Ostrowski’s Artistic “Credo”

Including several hymns eminently suitable for the feast of Christ the King.

Follow the Discussion on Facebook

Jeff Ostrowski · October 4, 2023

PDF Download • “Congregational Booklet” (Printable) for Jeff’s New Mass Setting

A congregational booklet requested by Mr. Seth Bauer.

Jeff Ostrowski · September 30, 2023

Eight (8) Responsorial Psalm Options • On turning Missalettes into little “gods”

They have embraced a certain opinion about matters and will never change—not even on their deathbed.

Jeff Ostrowski · September 27, 2023

(Not Kidding) • Does Singing for Mass Fulfill One’s Obligation to Attend Mass?

Jeff Ostrowski provides five (5) responses to an assertion made by a priest.

Jeff Ostrowski · September 26, 2023

PDF Download • All Seven (7) Movements: “Mass in Honor of Saint Noël Chabanel”

My Mass setting for the Ordinary Form involves your Congregation, your Cantrix, and your Choir.

Jeff Ostrowski · September 23, 2023

“Everybody Loves Raymond” Actress Responds to Cardinal Dolan

“The ‘Lamb of God’ can reach the length of a baseball game.” —Cardinal Dolan

Jeff Ostrowski · September 19, 2023

(Quiz) • “How Well Do You Know Your Hymns?”

Including a tip on preventing choirs from ‘sinking’ the pitch lower and lower.

Jeff Ostrowski · September 6, 2023

Natalia’s Message • “Explaining The Two Sections!”

If you asked random Catholics to recite in English—without reference to a book—a stanza from the “Tantum Ergo” of Saint Thomas Aquinas, how many do you think could?

Jeff Ostrowski · August 23, 2023

PDF Download • Saint Noël Chabanel Mass Setting (“Kýrie Eléison”) for the Ordinary Form

We must remember the lesson of the rock.

Jeff Ostrowski · August 17, 2023

Why Did You Become a Church Musician?

Including two (2) haunting and powerful Eucharistic hymns.

Jeff Ostrowski · August 11, 2023

PDF Download • Saint Noël Chabanel Mass Setting (“Lamb of God”) for the Ordinary Form

Today, we release the congregational “Lamb of God” with SATB polyphonic extension.

Jeff Ostrowski · August 2, 2023

Are These “Evil” Priests? • (Not Joking)

The professor inserted himself into our conversation, saying: “You’re both being foolish…”

Jeff Ostrowski · July 21, 2023

Why Is Catholic Music So Embarrassing? • Four “Levels” To Fix The Problem!

In 1994, the most powerful mainstream Catholic music organization published a song about the “enlightenment of Buddha.”

Jeff Ostrowski · July 13, 2023

PDF Download • 3-Voice “Agnus Dei” + Suggestions to Improve Music at Ordinary Form Masses

Should music at the Ordinary Form be identical to music at the Extraordinary Form?

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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

“Young people have entrusted me with their absolute preference for the Extraordinary Form… […] But, above all, how can we understand—how can we not be surprised and deeply shocked—that what was the rule yesterday is prohibited today? Is it not true that prohibiting or suspecting the Extraordinary Form can only be inspired by the demon who desires our suffocation and spiritual death?”

— Cardinal Sarah to Edward Pentin (23 September 2019)

Recent Posts

  • 💲 5.00 💵
  • 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.