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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 · September 13, 2023

SEPTEMBER • Monthly Reminder

Each day, I speak via telephone to folks who have supported Corpus Christi Watershed for years. Yet many of them don’t know about our email newsletter! Please sign up! Simply scroll to the bottom of any blog article and enter your email address. Thank you!

Jeff Ostrowski · September 12, 2023

“Mixing” Your Singers? • Just Do It!

Not long ago, I posted an Agnus Dei for Three Voices by William Byrd (d. 1623). When we sing the “Agnus Dei” at Mass, I often have the singers mix up, so they’re not standing next to someone singing their part. In my experience, this technique does wonders for tuning. Here’s a live excerpt (Mp3) […]

Jeff Ostrowski · September 8, 2023

8 Sept. 2023 • Charles Rosen on Bach!

Charles Rosen was a concert pianist who published insightful books about various musical topics. I believe our readers will enjoy this 27-minute presentation on the music of Johann Sebastian Bach. Not everything Mr. Rosen says is true. (For instance, Rosen was not the first pianist to record the ART OF THE FUGUE on the piano. […]

Jeff Ostrowski · September 7, 2023

7 Sept. 2023 • Alphabetized Hymnals?

One could be forgiven for believing that arranging hymns in alphabetical order would make them easier to find. Believe it or not, that’s actually one of the worst decisions an editor could make. This very brief video explains why.

Jeff Ostrowski · August 27, 2023

27 August 2023 • Nine Merry Men!

Half a decade has passed since nine (9) colleagues from Corpus Christi Watershed contributed texts, melodies, and harmonizations to a special hymn book in honor of North America’s patron saint, Father John Brébeuf. The website promoting it was massively overdue for a facelift. As of a few minutes ago, I can report that it’s been […]

Jeff Ostrowski · August 24, 2023

24 August 2023 • FEEDBACK

From a female choirmaster: “Thank you for your recent article, Jeff. We here in _____ absolutely love our Brébeuf hymnals! They have saved my life as a choir director! ☺️ The ease with which my choir members plunge into a new hymn using the ‘common melodies technique’ is so wonderful. You can see the relief on […]

Jeff Ostrowski · August 9, 2023

Shameful Quote

Some feel the most irresponsible 1960s reformer was Fr. Godfrey Diekmann. The Second Vatican Council had solemnly declared: “In accordance with the centuries-old tradition of the Latin rite, the Latin language is to be retained by clerics in the divine office.” In spite of this clear directive, Diekmann (3 March 1964) wrote: “What young candidate […]

Patrick Williams · August 8, 2023

Gregorian Offertory • “Exaltabo te Domine”

Eleventh Sunday after Pentecost, Seventeenth Sunday in Ordinary Time, Ash Wednesday

Jeff Ostrowski · August 7, 2023

PDF Booklet • 25 Pages!

As of a few minutes ago, you may go here to download the organ accompaniment booklet (25 pages) I created for the feast of the TRANSFIGURATION. Obviously, that feast will not take place for another year. Nevertheless, several techniques I used may be of interest to those who create liturgical booklets.

Jeff Ostrowski · August 1, 2023

Summer Singers’ Repertoire!

I mentioned a 3-Voice Setting of the AGNUS DEI, based on a Canon by William Byrd (d. 1623) in the context of the “hairpin” technique, something I really will emphasize this coming season. The piece is for Soprano, Middle, and Baritone. (The “Middle” voice should ideally be a mixture of women and men.) Recently, we […]

Jeff Ostrowski · July 27, 2023

Did You See This? (27 July 2023)

In case anybody missed it, we recently updated our editorial policy. Our website continues to grow in popularity—Deo gratias! Therefore, it seemed appropriate to ‘codify’ what we’ve been doing for the last few years.

Jeff Ostrowski · July 26, 2023

Know Anybody Famous?

It’s really humbling—and also very cool—to come across examples of how acclaimed several of my colleagues are. I was doing some research for a recent post and came across (!) one of our contributors in a place I was not expecting. You can see which one if you click here and scroll towards the middle […]

Jeff Ostrowski · July 23, 2023

What Charles Weaver Did (!)

Dr. Weaver kindly made me aware of something stupendous. Created by Abbat Pothier’s assistant and approved by his successor (about ten years after his death), it’s a KYRIALE, GRADUALE, and VESPERALE: 2,000 pages long! It’s in Gregorian notation on five staves and marks each mora vocis. Here’s a photograph of the “Puer Natus” INTROIT taken with my […]

Dr. Charles Weaver · July 22, 2023

An Interview with Bruno de Labriolle

Readers interested in different stylistic approaches to Gregorian chant may enjoy this interview with the singer Bruno de Labriolle, who directs the schola of Saint-Bruno-des-Chartreux in Lyon. The views on chant and liturgy aired in the interview aren’t exactly the same as those of any of our contributors, but I personally find this group’s performances, in […]

Jeff Ostrowski · July 20, 2023

More Than A Chart!

I’ve received many compliments about a comparison chart which was part of a recent article I posted. I feel flattered by these kind words, but I would like to point out that my chart doesn’t make much sense unless one reads the entire article.

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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 very first question to be considered, of course, was: “Just why does the Sacred Liturgy need renewal at all?” It cannot be denied that there were many present, in the beginning, who felt that the Liturgy was generally very good the way it was; further, if there were to be any improvements, they felt the Sacred Congregation of Rites was the agency properly suited to make those improvements.

— Most Rev’d Robert Emmet Tracy (d. 1980)

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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