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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

Andrea Leal • Article Archive

Andrea Leal is a wife and homeschooling mother of 6 children. She holds a Bachelor's Degree from UC Berkeley in Peace and Conflict Studies, and serves as choir director for the Traditional Latin Mass in Las Vegas.—Read full biography (with photographs).

Andrea Leal · April 6, 2022

PDF Download • “Regina Caeli for 3 Voices”

I never shared this before because pride and perfectionism held me back.

Andrea Leal · November 27, 2021

PDF Download • “Two Easy Advent Hymns”

When you read through the translation, you’ll agree this could certainly be sung during Sunday Masses in Advent…

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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Andrea Leal · June 3, 2021

PDF Download • For the Sacred Heart (3 voices)

There is a great need for simple polyphonic pieces arranged for 2 voice and 3 voices.

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Andrea Leal · March 9, 2021

PDF Download • EF “Singing Cues” (1-Page Sheet)

Leading music for the Extraordinary Form—Part 3 of a series by Andrea Leal.

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Andrea Leal · February 25, 2021

Part 2 • “Starting Your Own Traditional Latin Mass”

Can you say “yes” to these seven questions?

Andrea Leal · February 15, 2021

Part 1 • “Starting Your Own Traditional Latin Mass”

Practical advice for how to start a Traditional Latin Mass in your city.

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Andrea Leal · December 31, 2020

Hymns for the Holy Name of Jesus

Covid-friendly hymns for the Feast of the Holy Name.

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Andrea Leal · November 18, 2020

(Installment #14) “Catholic Hymnals” • Andrea Leal

I stand behind it to the extent that I have even volunteered to record several practice recordings, for which I have never received—nor will I ever receive—a single cent.

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Andrea Leal · October 29, 2020

PDF Download • Rare 1970 Document Explains “Spoken vs. Sung Propers”

This is perhaps the single most significant liturgical document CCWatershed has ever unearthed—and translated to English! • Explains the origin of “Gradual Antiphons” vs. “Missal Antiphons” (a.k.a. “Sacramentary Antiphons”)+

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Andrea Leal · September 23, 2020

PDF Download • Extremely Rare Sequence (Feast of Saint Francis of Assisi)

“Sanctitatis Nova Signa” is Gregorian Chant for the feast of Saint Francis of Assisi (October 4th).

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Andrea Leal · September 12, 2020

PDF Download • “Order of the Mass without a Congregation” (1970)

I find it interesting that the “Order of the Mass without a congregation” also tells the priest when he should face the Altar and when he not should face the Altar.

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Andrea Leal · July 28, 2020

8,000 entries • “Snippets Index” for New Hymnal

(Be patient while it loads) —Easy to use, fully complete; what more could you ask?

Andrea Leal · June 7, 2020

Brébeuf Virtual Choir Strikes Again!

These kids just can’t be stopped—including two amazing surprises.

Andrea Leal · June 1, 2020

Troubleshooting Gregorian Chant

Does your chanting need a simple tune-up or a whole engine rebuild? Let’s take a look under the hood.

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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

On 12 March 1908, Feast of St. Gregory the Great, the complete publication of the “Graduale” was issued by the Vatican Press. That very day, Dom Pothier solemnly presented the first copy to the Holy Father. Pius X wished to be the first to see the new book; he opened it at random, at page 128 of the supplement “pro aliquibus locis”—the Introit of the new Feast of Our lady of Lourdes. The Pope sang it with perfect taste to the last note.

— A witness of the papal audience writing circa 1915

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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