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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 · October 1, 2024

PDF Download • “Entrance Chant in English” for the 27th Sunday in Ordinary Time (Year B)

This coming Sunday—6 October 2024—is the 27th in Ordinary Time.

Jeff Ostrowski · September 30, 2024

You Forgot About This One!

I’d be interested to see the actual citations for this…

Jeff Ostrowski · September 29, 2024

An Anglican “Mess”

If I live to be 100 years old, there’s something I’ll never understand.

Jeff Ostrowski · September 28, 2024

Music List • (26th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I have prepared for this coming Sunday.

Jeff Ostrowski · September 28, 2024

Most Magnificent Plainsong Kyrie?

Here are some of my favorites.

Jeff Ostrowski · September 27, 2024

PDF Download • “Offertories and Communion Hymns for Unison + Organ” (Carlo Rossini, 1951)

I provide three (3) reasons you’ll want to download this book immediately.

Jeff Ostrowski · September 25, 2024

Liturgical Tomfoolery

Nobody’s been able to provide any reason for this—and it’s been 60 years.

Jeff Ostrowski · September 24, 2024

“Entrance Chant” • For Sunday (29-Sep-2024)

This one’s in Mode 3, imitating the authentic Gregorian chant in a magnificent way.

Jeff Ostrowski · September 24, 2024

PDF Download • “Entrance Chant” in English (26th Sunday in Ordinary Time, Year B)

Sometimes one hears the objection: “But Gregorian Chant was not originally accompanied on the organ…”

Jeff Ostrowski · September 23, 2024

Priest Demands Musician’s Resignation • (No Reason Given)

“Our priest was delighted with the program, or so it appeared. During Holy Week he asked me to resign (which I did). He gave no reason and would not even discuss the issue.”

Jeff Ostrowski · September 19, 2024

Music List • (25th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I have prepared for this coming Sunday.

Jeff Ostrowski · September 16, 2024

“Entrance Chant” • For Sunday (22-Sep-2024)

This one’s in Mode 4—and it imitates the authentic Gregorian chant in a magnificent way.

Jeff Ostrowski · September 14, 2024

A Real Advantage!

Before the internet, certain translators could easily “pull the wool over” unsuspecting eyes.

Jeff Ostrowski · September 12, 2024

Music List • (24th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I have prepared for this coming Sunday.

Jeff Ostrowski · September 11, 2024

Musical Setting • “Confíteor Déo Omnipoténti”

The participants went nuts over this musical setting. They just couldn’t get enough of it!

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Ubi Caritas” (SATB)
    I remember singing “Ubi Cáritas” by Maurice Duruflé at the conservatory. I was deeply moved by it. However, some feel Duruflé’s version isn’t suitable for small choirs since it’s written for 6 voices and the bass tessitura is quite low. That’s why I was absolutely thrilled to discover this “Ubi cáritas” (SATB) for smaller choirs by Énemond Moreau, who studied with OSCAR DEPUYDT (d. 1925), an orphan who became a towering figure of Catholic music. Depuydt’s students include: Flor Peeters (d. 1986); Monsignor Jules Van Nuffel (d. 1953); Arthur Meulemans (d. 1966); Monsignor Jules Vyverman (d. 1989); and Gustaaf Nees (d. 1965). Rehearsal videos for each individual voice await you at #19705. When I came across the astonishing English translation for “Ubi Cáritas” by Monsignor Ronald Knox—matching the Latin’s meter—I decided to add those lyrics as an option (for churches which have banned Latin). My wife and I made this recording to give you some idea how it sounds.
    —Jeff Ostrowski
    PDF • “Cantus Mariales” (192 pages)
    Andrea Leal has posted an absolutely pristine scan of CANTUS MARIALES (192 pages) which can be downloaded as a PDF file. To access this treasure, navigate to the frabjous article Andrea posted Monday. The file is being offered completely free of charge. The beginning pages of the book have something not to be missed: viz. a letter from Pope Saint Pius X to Dom Pothier, in which the pope calls Abbat Pothier “a man versed above all others in the science of liturgy, and to whom the cause of Gregorian chant is greatly indebted.”
    —Jeff Ostrowski
    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

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

“Subsequent changes were more radical than those intended by Pope John and the bishops who passed the decree on the liturgy.”

— John Cardinal Heenan (1974)

Recent Posts

  • PDF Download • “Ubi Caritas” (SATB)
  • PDF • “Cantus Mariales” (192 pages)
  • PDF Download • Fourteen (14) Versions of the Splendid Hymn: “Salve Mater Misericordiae”
  • Fulton J. Sheen • “24-Hour Catechism”
  • Music List • (2nd Sunday of Lent)

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