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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

President's Corner

Jeff Ostrowski · October 15, 2023

Can Nobody Help Us?

We are still searching for someone who can obtain for us a physical copy of either VOLUME 2 or VOLUME 8 of the accompaniments done by the LEMMENSINSTITUUT during the 1940s. Jeff’s personal copies were stolen.

Jeff Ostrowski · October 12, 2023

12 October 2023 • FEEDBACK

One of the more colorful emails we’ve received: “Jeff, I often disagree with your articles, but let me give credit where credit is due. You are surely the only person I know who could somehow tie together John F Kennedy, Lyndon B Johnson, Senator Barry Goldwater, and sacred music!” [The article she references is called Must […]

Jeff Ostrowski · October 12, 2023

Responsorial Psalm • “Eight Options”

In all seriousness, this article deals with some very dry topics. When I say “dry,” I mean technical (or even “boring”). Therefore, I wasn’t really expecting anyone to click on it. I was pleasantly surprised earlier this morning to see that it’s been one of our most highly downloaded articles over the last two weeks!

Jeff Ostrowski · October 10, 2023

Young Girl Imitates Jeff Ostrowski Conducting!

They say imitation is the highest form of flattery.

Jeff Ostrowski · October 6, 2023

“Christ the King” is coming up…

I’ve attempted to record the INTROIT for the Feast of Christ the King according to the official rhythm of the Catholic Church. You can view the YouTube recording of my attempt. Traditionally, our Savior’s “kingship” was celebrated as part of the Epiphany—but in 1925, Pope Pius XI created the “feast of Christ the King” to […]

Jeff Ostrowski · October 5, 2023

Does Singing Fulfill One’s Obligation?

My colleague, Richard J. Clark, has a little motto: The more time you spend on an article, the less people will care about it. I cannot claim to understand why certain articles gain more attention than others. For whatever reason, this recent article of mine has received an incredible amount of downloads. The full and […]

Jeff Ostrowski · October 3, 2023

“Slander!” • (Response to an Accusation)

A reader sent us an email which was both thoughtful and articulate. Feeling it deserved a response, I published this article a few days ago. I included the full letter sent to us by the reader, but that’s not all. Indeed, the article became rather lengthy and touched upon a number of different themes. I […]

Jeff Ostrowski · October 2, 2023

Interesting story about Sergei Rachmaninoff

It’s very brief, but I think you would enjoy hearing Benno Moiseiwitsch (d. 1963) tell this really cool story about Sergei Rachmaninoff (d. 1943). Moiseiwitsch, whose playing was admired by Josef Hofmann, had studied with Theodor Leschetizky (d. 1915). I opened my recent article by speaking of a powerful quote Rachmaninoff gave to Robert Croan, […]

Jeff Ostrowski · September 30, 2023

[Quiz] • “Do You Know Your Hymns?”

In case you missed it, many readers have enjoyed taking this little Quiz On Hymns. In the context of that article, I included a sensational quote about the Holy Mass by Monsignor Ronald Knox. Moreover, I talk about how Abraham Lincoln’s mother died, as well as a fabulous Eucharistic hymn by the Archbishop of Canterbury.

Jeff Ostrowski · September 28, 2023

William Byrd • Simple “Agnus Dei” Canon

Time flies! Back in July, I posted a PDF setting of a perfect canon by William Byrd (d. 1623) arranged as an AGNUS DEI for three voices. Last Sunday, we sang that arrangement with our volunteer choir. To hear a ‘live’ recording of it, click here (Mp3). In my humble opinion, this would be a perfect […]

Jeff Ostrowski · September 20, 2023

“Glory To God” • (For Choir + Congregation)

I wish to thank everyone for the nice comments I received vis-à-vis my Glory To God setting for Choir & Congregation. A gentleman with a musical doctorate from Indiana University wrote: “Love this setting so much. And I will pray, as you asked, for your return to composition more fully. You are very very good.” […]

Jeff Ostrowski · September 18, 2023

William Byrd • “Mass for Five Voices”

Our volunteer choir is learning the “Sanctus” from William Byrd’s Mass for Five Voices. You can hear a short excerpt (recorded last Sunday) but please ignore the sound of babies crying: Mp3 recording. We still have work to do—but we’re on the right track. Once we have some of the tuning issues fixed, I desire […]

Jeff Ostrowski · September 17, 2023

“Baptism” • A Unique Hymn

Father Christopher Phillips is the founding Pastor of Our Lady of the Atonement Catholic Church. One of his hymns is unique and (in my humble opinion) quite beautiful. His hymn is basically a prayer to the Holy Trinity but also speaks of Baptism and the Holy Eucharist. It would be an ideal Communion hymn on […]

Jeff Ostrowski · September 15, 2023

For the Record: “Jeff Plays Organ”

Twenty-five years ago, if you’d told me I would end up as an organist, I would have laughed. But God seems to have had a different plan! I intend to record every hymn in the Brébeuf Hymnal on the pipe organ (if our Savior gives me the time and energy). You can hear my first recording […]

Jeff Ostrowski · September 13, 2023

Why Sing? • Byrd Answers!

Make sure to click on the recent article by Dr. Charles Weaver, because he links to something remarkable. In essence, it’s a list—written by William Byrd!—regarding why we should sing.

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —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
    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

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

The Princess of the Palatinate once described German Protestantism to Louis XIV with this formula: “In our country, everyone makes up his own little religion.” Every priest, or almost every priest, is at this point today. All the faithful have to say is “Amen.” They are still blessed when the pastor’s religion does not change every Sunday, at the whim of his reading, the foolery he has seen others at, or at his own pure fancy.

— Professor Louis Bouyer (1968)

Recent Posts

  • Music List • (2nd Sunday of Lent)
  • PDF Download • “Funerals in the Ordinary Form”
  • Extreme Unction
  • Like! Like! Like!
  • Which Mass?

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