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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

Cynthia Ostrowski • Article Archive

Cynthia Ostrowski holds a bachelor's degree in Geographic Information Science and a minor in Computer Science from Texas A&M University Corpus Christi (2005). She is currently a stay-at-home mother of two children. A former GIS analyst, Cynthia's interests include photography, french horn, and singing polyphony.—Read full biography (with photographs).

Cynthia Ostrowski · February 11, 2026

Gorgeous Image of Monks Singing!

Image from a ‘Book of Hours’ (15th century).

Cynthia Ostrowski · June 11, 2025

Available! • Free Rehearsal Videos for Agnus Dei “Mille Regretz” after Gombert (d. 1560)

Artificial intelligence will never replace authentic polyphony.

Cynthia Ostrowski · December 20, 2023

“My Favorite Christmas Song” • Played by Dr. Carbonell and Fr. Justin Ward (Live Recording)

If one must have piano in church, this is the way to do it!

Cynthia Ostrowski · September 20, 2023

What Robert Did to My Graphics

“Dear Cynthia: I landed on your website while searching for…”

Cynthia Ostrowski · September 11, 2023

Can a Lens Make a Difference?

My husband tells me this edition (by Dom Pothier’s student) is of monumental importance. I take him at his word.

Cynthia Ostrowski · June 15, 2022

“You Are Invited” • Solemn Mass sung by 95 singers!

Don’t miss the first Mass of an FSSP priest on the feast of the Most Sacred Heart of Jesus.

Cynthia Ostrowski · February 16, 2021

(photographs) • The Saint Jean de Brébeuf Hymnal

Cynthia Ostrowski · September 15, 2020

(Installment #8) “Catholic Hymnals” • Cynthia Ostrowski

According to Bishop Sheen: “Christianity, unlike any other religion in the world, begins with catastrophe and defeat.”

Follow the Discussion on Facebook

Cynthia Ostrowski · September 14, 2016

“Matri Divinæ Gratiæ” • 3-voice Motets (SAB)

Kevin Allen has released a collection every Roman Catholic choir will treasure!

Cynthia Ostrowski · August 15, 2016

Catholic Bulletin Art • Installment #71

If you’re confused about what’s happening, search google for “Dormition of Mary.”

Cynthia Ostrowski · May 23, 2016

Los Angeles: Less Than A Week Away!

A phenomenal event which involves our District Superior & Archbishop Gomez.

Cynthia Ostrowski · February 3, 2016

“Ad Orientem” Image You’ll Want To Download

This high resolution image portrays a priest offering Mass with the Holy Trinity above.

Cynthia Ostrowski · December 29, 2015

Popular Posts From 2015

In case you missed any of these!

Cynthia Ostrowski · October 19, 2015

Catholic Bulletin Art • Installment #70

The feast of Christ the King approaches!

Cynthia Ostrowski · September 16, 2015

Catholic Bulletin Art • Installment #69

Today’s installment is a picture of Saint Alphonsus Ligouri.

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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

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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

“It would be difficult to find a failure of imagination greater than that of Carl Czerny.”

— Robert Schumann

Recent Posts

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  • Extreme Unction
  • Which Mass?
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  • PDF Download • “Pange Lingua” in Simple (Contemporary) Polyphony for Three Voices

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