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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 · January 19, 2015

Dick Morris & Gregorian Accompaniment

Some people accept a job as choir director and say, “I have five singers who don’t read music, so I guess that’s how it will always be.”

Jeff Ostrowski · January 18, 2015

From The 1400s • Communion Kneeling

A beautiful image from 15th-century Austria.

Jeff Ostrowski · January 15, 2015

PDF Download: Standard Catholic Hymnal (1921)

This extremely rare Catholic hymn book is here made available for the first time ever as a PDF download.

Jeff Ostrowski · January 15, 2015

Musical Resources • Second Sunday after Epiphany

It’s hard to imagine a more beautiful text than Sedulius’ Hymn: Hostis Herodes Impie.

Jeff Ostrowski · January 14, 2015

Hypocrisy About Francis From An Unlikely Source

Resist the temptation to believe that Francis is 80,000 times as important as Benedict since he receives 80,000 times as much media coverage.

Jeff Ostrowski · January 13, 2015

PDF Download: Notre Dame Hymn Tune Book (1905)

“They call me a Papist and they laugh at my creed…”

Jeff Ostrowski · January 12, 2015

Cristóbal de Morales Missa “Ut Re Mi Fa Sol La.”

You’ll want to immediately download these scores, videos, and Mp3 files!

Jeff Ostrowski · January 12, 2015

PDF Download: Rare Hymnal By Boston’s Archbishop

Can you imagine singing all those vernacular hymns while Mass is happening?

Jeff Ostrowski · January 9, 2015

Short And Simple Organ Postludes & Preludes

Many of you asked me to share the results, which I have done below.

Jeff Ostrowski · January 8, 2015

Musical Resources • Holy Family

Many don’t realize that all the EF chants for the Holy Family can be used at OF—cf. section 397 of the Ordo Cantus Missæ.

Jeff Ostrowski · January 8, 2015

“The best I have ever seen. Anywhere. In the world. Period.” —Mr. John Sonnen

“The vitality of the Classical Rite is as fresh as ever.”

Jeff Ostrowski · January 7, 2015

Rare Photograph: Archbishop Fulton J. Sheen With Father Joseph Ratzinger in 1965

Archbishop Sheen said nary a word about any liturgical reforms following the Council.

Jeff Ostrowski · January 7, 2015

Was Fulton J. Sheen Ever Wrong?

There’s a discrepancy in this Sunday’s EF Introit.

Jeff Ostrowski · January 7, 2015

Why Didn’t Anyone Stop This?

Here is an except from a Church bulletin published in December of 2014.

Jeff Ostrowski · January 6, 2015

Organ Processionals & Postludes: Suggestions Needed

“So many of the wonderful Preludes & Fugues by Bach—as splendid as they are—do not work as Processional pieces: they’re simply too long.”

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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

In the Orthodox Churches they have kept that pristine liturgy, so beautiful. We have lost a bit the sense of adoration. They keep, they praise God, they adore God, they sing, time doesn’t count. God is the center, and this is a richness …

— Pope Francis (8/2/2013)

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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