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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

Extraordinary Form 1962 Missal

Keven Smith · June 29, 2020

Real Life in a Large Church Choir Program (Part IV of IV)

We come now to the final installment in my series on our music program at St. Stephen the First Martyr Catholic Church in Sacramento, California.

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Fr. David Friel · March 10, 2020

Liturgical Custody of the Eyes

Guarding the Sense of Sight so as to Promote Participation

Follow the Discussion on Facebook

Fr. David Friel · October 24, 2019

“Mass of the Americas” • Solemn Pontifical High Mass in DC

Archbishop Cordileone will offer Mass November 16, 2019 at the Basilica of the National Shrine of the Immaculate Conception.

Fr. David Friel · February 23, 2019

New Resource! • Chant Videos for Treble Voices

A new website seeks to record the full Gregorian propers each week using a treble voice.

Fr. David Friel · October 23, 2018

Solemn High Mass with Faure’s Requiem on All Souls’ Day

Missa Solemnis to be offered at St. John Paul II Shrine in Washington, DC

Fr. David Friel · October 21, 2018

Participation Booklet (Spanish) for Extraordinary Form Baptisms

Un recurso para facilitar una participación más profunda

Fr. David Friel · October 6, 2018

Participation Booklet for Extraordinary Form Baptisms

A resource for facilitating deeper participation

Fr. David Friel · September 23, 2018

Saint Thérèse Triduum

An Annual Tradition at the Philadelphia Carmel

Fr. David Friel · September 4, 2018

Masses to Begin at FSSP Parish in Philadelphia

This weekend will mark the beginning of Masses offered at the parish.

Fr. David Friel · May 27, 2018

The Centrality of the Sign of the Cross

The Roman Rite revolves around this sign of our salvation

Fr. David Friel · March 18, 2018

The Preface of the Holy Cross

An eloquent liturgical text worthy of prayerful reflection

Fr. David Friel · December 24, 2017

Lux Fulgebit: Mass at Dawn of Christmas Day

New recording by the Schola Cantorum of St. Mary’s Church in Norwalk, CT

Fr. David Friel · October 29, 2017

All Saints and the Extraordinary Form of the Mass

The Roman Rite gives strong attention to the presence of the saints.

Fr. David Friel · August 13, 2017

Tenth Anniversary Celebration • “Summorum Pontificum”

A Solemn Pontifical Mass will be offered in Philadelphia on September 14, 2017

Fr. David Friel · March 20, 2016

Baptisms in the Extraordinary Form

Reflections on a Recent Experience

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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

“Pope Francis breaks Catholic traditions whenever he wants because he is free from disordered attachments. Our Church has indeed entered a new phase: with the advent of this first Jesuit pope, it is openly ruled by an individual rather than by the authority of Scripture alone or even its own dictates of tradition plus Scripture.”

— Fr. Thomas Rosica (31 July 2018)

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.