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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

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 · September 9, 2014

That Inscrutable Creature On The Internet

I’ve come to realize that truth & beauty should be loved for their own sake. Trying to “possess” them is silly.

Jeff Ostrowski · September 8, 2014

Have We Lost The Church Music Battle?

The traditional music still triumphs in one important area: parishes run by “no-nonsense” priests.

Jeff Ostrowski · September 2, 2014

PDF Download: Mediator Dei Hymnal (1955)

This book’s editor had the reputation of being a “walking encyclopedia” of American hymnology…

Jeff Ostrowski · September 1, 2014

Barack Obama & Catholic Sacred Music

I wish somebody had explained this to me in 2005, when I began working for the Ordinary Form.

Jeff Ostrowski · August 28, 2014

Why I No Longer Compose

When I observe our beautiful children, I realize that God is the True Artist.

Jeff Ostrowski · August 28, 2014

Choirs & Singers With Spread Vowels — Best Example Ever!

When teaching your choir to hear the difference between “spread” vowels & proper choral vowels, use this example.

Jeff Ostrowski · August 27, 2014

Dan Schutte’s “Missa My Little Pony” (2nd Part)

My original article was shared 4,000 times and generated a surprising amount of hate mail.

Jeff Ostrowski · August 25, 2014

NBC “Meet The Press” & Catholic Church Music

At the program’s conclusion, I felt dumber than when I’d started watching.

Jeff Ostrowski · August 25, 2014

Pope John Paul II Wearing The Cappa Magna (As Cardinal Wojtyla)

The most marvelous uniform I’ve seen was the one worn by Prince Charles when he married Diana.

Jeff Ostrowski · August 24, 2014

Photo: Church Music Association of America (1964)

This historic photograph was taken at the organizational meeting for the CMAA the same year “Inter Oecumenici” was issued by the Vatican.

Jeff Ostrowski · August 21, 2014

How To Debunk Four Common Liturgical Myths

The priest returned to the Altar, removed the big red Missal, carried it to the pulpit, and proceeded to translate the entire Gospel into English.

Jeff Ostrowski · August 19, 2014

Kirsten Powers & The Hound of Heaven

“I’ll never forget standing outside that apartment and saying to myself, ‘It’s true. It’s completely true.’ … I had not one iota of doubt. I was filled with indescribable joy.”

Jeff Ostrowski · August 18, 2014

Breaking News! Pope Francis Refuses To Adopt “Narrative” Of Progressive Liturgists

That Tablet article could best be described as ill-informed gossip from an unqualified author with too much time on his hands…

Jeff Ostrowski · August 14, 2014

CALLING ALL PRIESTS! —Your Parishioners Are Waiting… They’re Waiting For…

“Before the Council, liturgical law was regarded as something sacred; but everyone now feels authorized to do what he likes…” — Cardinal Antonelli (24 July 1968)

Jeff Ostrowski · August 12, 2014

Some Thoughts On “Englishing” Gregorian Chant

But why bring up this subject at all, when probably 95% of Catholic priests have no familiarity with Gregorian chant? • concerning the challenges of composing Gregorian chant in English+

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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

“Even after 1600 A.D.—despite major changes in musical taste—the compositions of Father Cristóbal de Morales were reprinted at Venice. Indeed, and as late as 1619 A.D. one Venetian publisher found his magnificats still in sufficient demand to make a profitable commercial venture out of issuing a new transcribed version for equal voices.”

— Dr. Robert Murrell Stevenson (d. 2012)

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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