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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

Quick Thoughts

Jeff Ostrowski · January 31, 2026

“Reminder” — Month of Febr. (2026)

Since a new month has arrived, it’s my pleasure to remind you that…

Jeff Ostrowski · January 29, 2026

PDF Chart • “Plainsong Rhythm”

Whence this lack of curiosity?

Jeff Ostrowski · December 26, 2025

PDF • “O Come All Ye Faithful” (Simplified)

Please play through it and let me know what you think.

Jeff Ostrowski · December 21, 2025

PDF Download • “In Paradisum” in English

If anyone wants to download this organ accompaniment, feel free to do so!

Jeff Ostrowski · December 16, 2025

What does this mean? “Pre-Urbanite”

This topic I had believed to be fairly well understood—but I was wrong.

Jeff Ostrowski · December 11, 2025

PDF Download • “Santo Santo Santo”

A brief, bright, stately setting.

Corpus Christi Watershed · December 6, 2025

Pope Leo XIV on Sacred Music

On 5 December 2025, the pope said…

Corpus Christi Watershed · November 27, 2025

“Translations Approved for Liturgical Use”

There are three (3) translations of the Bible which can be used in the sacred liturgy.

Corpus Christi Watershed · November 1, 2025

Gospel Options for 2 November (“All Souls”)

We’ve been told some bishops are suppressing the TLM because of “unity”…

Jeff Ostrowski · October 24, 2025

“Our Father” • Musical Setting?

Do any readers speak German?

Jeff Ostrowski · October 6, 2025

New Bulletin Article • “12 October 2025”

Those responsible for preparing parish bulletins may wish to…

Jeff Ostrowski · October 4, 2025

“American Catholic Hymnal” (1991)

This one book contains and memorializes every horrible idea from the 1980s.

Jeff Ostrowski · September 24, 2025

“Canonic” • Ralph Vaughan Williams

This is quite a clever arrangement of “Come down, O love divine.”

Jeff Ostrowski · September 22, 2025

Did they simplify these hymn harmonies?

Looking through a (Roman Catholic) German hymnal printed in 1952…

Jeff Ostrowski · September 21, 2025

PDF Download • “Side-By-Side Comparison”

Re: the special hymn for the upcoming feast (9 November).

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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

“I have devoted myself too much, I think, to Bach, to Mozart and to Liszt. I wish now that I could emancipate myself from them. Schumann is no use to me any more, Beethoven only with an effort and strict selection. Chopin has attracted and repelled me all my life; and I have heard his music too often—prostituted, profaned, vulgarized … I do not know what to choose for a new repertory!”

— Ferruccio Busoni (to a colleague in 1922, when he was 56 years old)

Recent Posts

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  • 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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