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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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · March 5, 2022

“Communion Hymn For Lent” • (Rec. 3/4/2022)

I believe many choir members will stop coming back if the music is always the same.

Jeff Ostrowski · March 5, 2022

IMPORTANT • Stunning News From Rome!

In this meeting—and subsequent statement—Pope Francis made it clear that institutes like the FSSP are not affected by “Traditionis Custodes.”

Jeff Ostrowski · March 5, 2022

Marvelous News From Pope Francis!

Two members of the Priestly Fraternity of Saint Peter recently met with Pope Francis at the Vatican. (You can read the whole story.) The Pope insisted that the FSSP should be “preserved, protected, and encouraged.” Moreover, Pope Francis made it clear that institutes such as the Fraternity of Saint Peter are not affected by the […]

Jeff Ostrowski · March 2, 2022

Does Your Musical Program Have Balance?

What I’ve labeled “musical diversity” could also be thought of as “balance.”

Jeff Ostrowski · February 27, 2022

PDF Download • Quinquagesima Vespers

I created a booklet for my choir. (The congregation already has their own booklet). This booklet is for Quinquagesima Vespers, and you can download it if you desire. Print on “double sided” and the booklet will come out correctly. The polyphonic Magnificat is not included in that booklet, since the choir members have it in […]

Jeff Ostrowski · February 26, 2022

FEEDBACK • 25 February 2022

We love receiving mail from our readers. Here are two messages we received today from two different music directors in Canada: (1) “We are a small Schola in Yukon, Canada and love your practice videos repertoire.” (2) “Thank you so much for the indispensable work that you are doing to rebuild the musical life of […]

Jeff Ostrowski · February 26, 2022

PDF Download • Missa Philomena (Philippe Verdelot)

This music is from a much earlier period; and you can tell.

Jeff Ostrowski · February 26, 2022

“Common” Hymn Tunes? • Another Example

The first text is for the “pre-Lent” season…

Jeff Ostrowski · February 24, 2022

Cardinal Cupich’s Diocese • “What Mass Looks Like”

The “primary cross” for most young men has to do with temptations against the 6th Commandment.

Jeff Ostrowski · February 22, 2022

PDF Download • No More OCP “Breaking Bread”

This powerful response—by a Catholic priest—is without question one of the most fascinating things I’ve ever read.

Jeff Ostrowski · February 19, 2022

A Fugue that “explains” itself

One of my choir members sent me this Ontological Fugue. If you can get past the performance—which is terrible (perhaps on purpose)—you will learn an awful lot about fugues. In my opinion, whoever created that score is a genius! It would be awesome to know from a professional theorist, such as Charles Weaver, whether they […]

Jeff Ostrowski · February 18, 2022

Eucharistic Hymn • By a Jesuit Martyr Priest

English has words whose meanings directly contradict each other (such as “cleave” or “sanction”).

Jeff Ostrowski · February 16, 2022

Sound superb! … with just 2 minutes of rehearsal

I’m someone who harbors an irrational fear of anything I’m not familiar with.

Jeff Ostrowski · February 13, 2022

“Alleluia” • Gone For Good?

Two days ago, Bishop Ronald Fabbro of London (Ontario) released a rigid decree. Much could be said, but let’s take just one item. Bishop Fabbro demands that everyone adhere to “the celebration of Mass as found in the new Roman Missal (2011).” Then, in the very next sentence, he rigidly demands that all priests celebrate […]

Jeff Ostrowski · February 12, 2022

Attention! • “15,283 Signatures … More Needed”

I’m generally against online petitions, but here’s the thing…

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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 case of urgent danger of life anyone may baptize, even a heretic or pagan. It is sufficient that he administer the essential matter and form and have the implicit intention of doing what Christ instituted. Naturally a Catholic must be preferred, if possible. A man is preferred to a woman; but anyone else to the parents.”

— Father Adrian Fortescue (1917)

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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