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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

Articles

Jeff Ostrowski · April 22, 2023

PDF Download • Draft Copy — “2023 Symposium Booklet” (320 Pages)

I will never forget standing in that green room, waiting to go on stage.

Jeff Ostrowski · April 17, 2023

“I Came From Somewhere” • (So Did You!)

Including a haunting hymn by Flor Peeters for Eastertide.

Jeff Ostrowski · April 14, 2023

“Quasi Modo” • Introit for this coming Sunday.

I’m desperately in need of this book!

Guest Author · April 13, 2023

Gregorian Rhythm Wars • “The Hidden Dactyl”

“Perhaps surprisingly, not one word of three syllables in the ancient Easter sequence ‘Laudes Salvatori voce’ is sung to the rhythm of a dactyl.” —Alasdair Codona

Jeff Ostrowski · April 12, 2023

“Regína Caéli Laetáre” • 18 organ accompaniments

Plainsong sung poorly—in a sluggish, lifeless manner—can leave a bad taste in people’s mouths.

Patrick Williams · April 12, 2023

The Illumination of the Church at the Easter Vigil

“Is the symbolism of the Easter Vigil better served by brilliant light or the faint glow of candles in the darkness?” —Patrick Williams

Jeff Ostrowski · April 11, 2023

“Truly Bizarre!” • Easter Vigil on Easter Sunday?

Rather than allow the traditional times, the Vatican gave permission to allow the Easter Vigil to be celebrated on the morning of Easter Sunday!

Patrick Williams · April 10, 2023

Gregorian Rhythm Wars • “Non Praevaleat”

“We got to this point because we questioned unfounded claims.” —Patrick Williams

Jeff Ostrowski · April 7, 2023

Good Friday Hymn • From “Lyra Catholica”

Could 1% of Catholics? Or even fewer than that?

Veronica Brandt · April 4, 2023

Passiontide Carols?

… as Christians in the midst of the world, we have a solemn obligation to restore due reverence to these sacred times.

Follow the Discussion on Facebook

Jeff Ostrowski · April 1, 2023

Help! • Seeking “Machine Gun” Singing Technique

It was without question the wildest thing I ever heard.

Follow the Discussion on Facebook

Jeff Ostrowski · April 1, 2023

Three (3) Cheerful Items • “Sacred Music Revolution”

Dallas, Singapore, Los Angeles…there’s so much good in the world!

Patrick Williams · March 31, 2023

Who Should Sing the Passion? What about Tracts?

“I am of the opinion that women are not to participate in the singing of the crowd parts and that the manner of alternation in the tract is merely a matter of custom, preference, or practicality.” —Patrick Williams

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!

Jeff Ostrowski · March 28, 2023

Three (3) Tricks Every Choir Director Should Learn

Conscientious choirmasters know it’s crucial to get “as much bang for your buck” as possible.

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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

“In my capacity as the prefect of the Congregation for Divine Worship and the Discipline of the Sacraments, I continue to remind all that the celebration toward the East (versus orientem) is authorized by the rubrics of the missal, which specify the moments when the celebrant must turn toward the people. A particular authorization is, therefore, not needed to celebrate Mass facing the Lord.”

— ‘Robert Cardinal Sarah, 23 May 2016’

Recent Posts

  • Which Mass?
  • Like! Like! Like!
  • 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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