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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 · January 7, 2022

6 January 2022 • Quick!

A short version of the INTROIT for the feast of the Epiphany has been added to the Saint René Goupil Gregorian Chant Website.

Jeff Ostrowski · January 3, 2022

Confusing Feasts of Christmas

Whether one considers the Missale Vetustum or the post-conciliar calendar—or even the 1908 calendar—the feasts which follow Christmas are very confusing. Last year I created this comparison chart. I hope you find it helpful. As far as I can tell, my chart is the first effort to carefully detail the changes made to post-Christmas feasts […]

Jeff Ostrowski · January 1, 2022

1 January 2022 • Alternate Melodies

In a 14th century manuscript, I found some alternate melodies for the “Dóminus vobíscum” and “Et cum spíritu tuo.” I’m not sure we could ever use these at Mass; most priests have a hard enough time with the Editio Vaticana melodies!

Jeff Ostrowski · December 20, 2021

At Least This Is Clear!

Archbishop Roche, current head of the CDW, stated during his video interview as follows: “The Church has given us the celebration of the Mass in two forms. The Ordinary Form is the Mass that was developed under blessed Pope Paul VI in the 1960s. […] The Extraordinary Form is another expression, which is older than […]

Jeff Ostrowski · November 16, 2021

16 November 2021 • So Valuable!

If people only knew about this this website, they would be amazed. It is called the “snippets” index, and I could not live without it. We’ve tried everything we can think of to let people know about it—and we’ll keep trying—but even some of our most faithful readers don’t realize that hidden treasure!

Jeff Ostrowski · November 11, 2021

11 November 2021 • “Iste Confessor” Hymn

The brief little SATB piece, O Pater Sancte (PDF), has been requested by many. The full title is O Pater Sancte, Mitis Atque Pie (“Father most holy, gracious and forgiving”). The melody occurs many times in the The Saint Jean de Brébeuf Hymnal—including on page 724 with a fabulous translation by Monsignor Knox. The tune […]

Jeff Ostrowski · October 28, 2021

“Hymnals Compared” • with PDF files!

Mr. Daniel Craig, an accountant, comes from a musical family. His sister is a nun, and his brother is currently a seminarian. He has put together a detailed comparison of fifteen traditional Catholic hymnals. Many PDF files are included. Click here to view the article.

Jeff Ostrowski · October 23, 2021

22 October 2021 • “Sad & Unnecessary”

The USCCB has completely deleted a section of their website which (before they deleted it) contained helpful resources for the classical Roman Rite. Something cool they had included (before they deleted it) was a link to the new prefaces, approved by Pope Francis on 25 March 2020. Will this madness never end?

Jeff Ostrowski · October 11, 2021

11 October 2021 • “Sing All Verses?”

Some claim Catholics deserve condemnation because (unlike Protestants) Catholics often omit verses when singing hymns at Mass. Is that true? The wonderful Sophia Institute Press—as part of a series on authentic sacred music—has provided an answer (PDF) to this question.

Jeff Ostrowski · October 1, 2021

Where do Catholics find hymns?

The wonderful Sophia Institute Press has begun a “Q+A” section which tackles common liturgical questions, and here’s a sample: “At a conference I recently attended, the speaker said hymns don’t belong at Mass; was he telling the truth?” And you can read the answer. To access the complete set (which is a work in progress), […]

Jeff Ostrowski · September 28, 2021

28 September 2021 • FEEDBACK

From a reader: “I have read the pages explaining the Blessed Sacrament in the Brébeuf hymnal and plan on continuing to contemplate them. Moreover, the Christ the King Hymn is beautifully sung on the recording you posted (to the Watershed blog), and I wish my church would sing these hymns instead of modern ones from […]

Jeff Ostrowski · September 26, 2021

“Salve Regina” • Organ Accompaniment

Readers already realize that seventeen (17) splendid organ accompaniments for the simple “Salve Regina” can be freely and conveniently downloaded here. But what about the solemn tone for the “Salve Regina”—has anyone composed an organ accompaniment for that? Yes, Canon Jules Van Nuffel has composed one for the solemn version.

Jeff Ostrowski · September 24, 2021

“A Tale Of Two Missals”

Sometimes words are superfluous. Sometimes no commentary is needed. If you look at this Tale of Two Missals (PDF)—which compares the Canon from the “Modern” ICEL Missal with a “Dark Ages” Missal, I think you will understand exactly what I’m getting at.

Jeff Ostrowski · September 23, 2021

23 September 2021 • FEEDBACK

From a reader: “Corpus Christi Watershed is the greatest musical organization ever created in the Church!”

Jeff Ostrowski · September 21, 2021

Church “Narthex” • What’s that?

Do you know what the church narthex is? It’s kind of like a separate room, blocked off by a wall. A buddy of mine (sitting in the narthex) took some iPhone recordings of our congregation singing Vespers. Here’s how they sound sans organ. [Note: Whenever I play for Vespers, I make sure to have some […]

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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

If the homily goes on too long, it will affect two characteristic elements of the liturgical celebration: its balance and its rhythm. The words of the preacher must be measured, so that the Lord, more than his minister, will be the center of attention.

— Pope Francis (11/24/2013)

Recent Posts

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

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