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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

Holy Week

Jeff Ostrowski · March 29, 2023

“Seventy-Three (73) Changes” • Which Pope Pius XII Made to Holy Week

If we feel compelled to condemn these changes, let’s at least spend time learning what they are!

Keven Smith · March 29, 2021

A Short Reflection for Holy Week: On Love

May these thoughts on selfless love encourage you to persevere through Holy Week.

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Keven Smith · March 22, 2021

Hidden Gem: Crux Fidelis (attr. King John IV of Portugal)

I don’t know who really wrote this motet, but I do know it’s a soothing and highly accessible selection for Holy Week.

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Fr. David Friel · March 13, 2021

Holy Week Chants • Clergy Training

An introduction to the English chants of Holy Week for clergy

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Fr. David Friel · February 18, 2021

CDW Guidance for Holy Week 2021

Bishops have broad freedom to determine what adaptations may be necessary in 2021.

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Fr. David Friel · April 5, 2020

Craving the Body of Christ

Insights from Joseph of Arimathea

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Fr. David Friel · March 20, 2020

CDW Guidelines for Holy Week 2020

The Congregation has released a short document with pertinent guidance.

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Jeff Ostrowski · April 15, 2017

“Reproaches” for Good Friday (Recording)

The indispensable “Musician’s Guide to Good Friday,” including a 50-page PDF and rehearsal videos!

Fr. David Friel · January 22, 2017

Motet for Three Voices: “O Crux Ave” 1

This piece is ideal for use as a motet during the veneration of the Holy Cross at the Good Friday liturgy.

Fr. David Friel · March 6, 2016

Parish Lenten Programs • 15 Suggestions

Simply adhering to the liturgical traditions of the Church would be a wonderful Lenten program for every parish.

Fr. David Friel · January 24, 2016

Motet for Three Voices: “O Crux Ave”

This piece is ideal for use as a motet during the veneration of the Holy Cross at the Good Friday liturgy.

Veronica Brandt · April 11, 2015

How did your Holy Week go?

Singing for the Sacred Triduum and Easter ceremonies is an awesome privilege. Coming out the other side can be very sweet indeed, even when things didn’t always go quite as planned.

Fr. David Friel · March 29, 2015

Essential Resources for Holy Week

Knowing What Is Needed

Richard J. Clark · March 27, 2015

Five Things Directors and Choirs Must Remember This Week

You may forever change the lives of someone you do not know in ways you will never know.

Richard J. Clark · February 27, 2015

Helping Your Deacon or Priest Learn the Exsultet

Singing the “Exsultet” can be intimidating! Six pages of endless notes and words? Here are some helpful tools.

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Corpus Christi Watershed

President’s Corner

    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —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

“We wish to express the hope that students of Gregorian Chant come back to the pure Vatican Edition, in the ancient block-note form, without the addition of any signs whatever, in order to achieve Gregorian unity.”

— Josef Gogniat (12 March 1938)

Recent Posts

  • Which Mass?
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  • PDF Download • “Pange Lingua” in Simple (Contemporary) Polyphony for Three Voices
  • PDF Download • “Gregorian Chant Booklet” mailed by Pope Saint Paul VI to every bishop
  • My Response Surprised A Parishioner ‘Upset’ About Latin

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