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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 · February 12, 2026

PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)

This melody is quite ancient.

Jeff Ostrowski · February 10, 2026

“Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

“In a world filled with a lot of noise, your sacred song lifts our hearts to heaven…” —Parishioner

Jeff Ostrowski · February 8, 2026

PDF Download • “2-Voice Hymn” (Holy Name)

This arrangement works with a mixed choir (or children singing with men).

Jeff Ostrowski · February 7, 2026

Music List • (5th Sund. Ordinary Time)

Readers have expressed interest in examining my “music list” for this coming Sunday.

Jeff Ostrowski · February 7, 2026

Fulton J. Sheen • “24-Hour Catechism”

(6 of 50) “Christ Foretold”

Jeff Ostrowski · February 6, 2026

PDF • “Communion” (5th Sunday in Ordin.)

This text will be familiar to altar boys.

Jeff Ostrowski · February 4, 2026

Funeral Music “Template” • For Families

This was difficult to assemble, because the “Ordo Exsequiarum” has never been translated into English.

Jeff Ostrowski · February 3, 2026

“To Cover Sin With Smooth Names”

You owe it to yourself to examine the sample pages (from the full-color section).

Jeff Ostrowski · February 2, 2026

Heretical Hymns

A nice tune, but a nasty text!

Jeff Ostrowski · February 2, 2026

Alphabetizing Hymn Titles Inside Hymnals • “Does This Make Any Sense?”

“Many breviary hymns are really only fragments of very long compositions.” —Dr. Fortescue

Jeff Ostrowski · February 1, 2026

Fulton J. Sheen • “24-Hour Catechism”

(5 of 50) “Good and Evil”

Jeff Ostrowski · January 31, 2026

“Reminder” — Month of Febr. (2026)

Since a new month has arrived, it’s my pleasure to remind you that…

Jeff Ostrowski · January 29, 2026

Dom Pothier • Photo from 1904

This is quite a beautiful image.

Jeff Ostrowski · January 29, 2026

PDF Chart • “Plainsong Rhythm”

Whence this lack of curiosity?

Jeff Ostrowski · January 28, 2026

PDF • “3-Voice Motet” (Father De Laet)

Motet is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.”

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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

“From the responses received, it is thus clear that by far the greater number of bishops feel that the present discipline [Communion on the tongue and not in the hand] should not be changed at all—indeed, that if it were changed, this would be offensive to the sensibility and spiritual appreciation of these bishops and of most of the faithful.”

— Sacred Congregation for Divine Worship (29 May 1969)

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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