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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 · March 31, 2016

Mother Angelica • “60 Minutes” (1984)

This video shows Mother Angelica playing the drums at Mass! (Not kidding!)

Jeff Ostrowski · March 30, 2016

“Hail, Holy Queen Enthroned Above” • Nine Organ Accompaniments

Why do we love descants so much?

Jeff Ostrowski · March 29, 2016

Mother Angelica, How Bad Was It?

“To preside, a person must live from the rich ambiguity of symbolic reality.”

Jeff Ostrowski · March 28, 2016

PDF Download • Monsignor Ronald A. Knox “The Trials Of A Translator” (1949)

Your Easter present has arrived!

Jeff Ostrowski · March 27, 2016

True Meaning Of Easter?

After all the work we musicians do to make Holy Week special…

Jeff Ostrowski · March 24, 2016

Musical Resources • Holy Thursday (1962 Missal)

“By this shall all men know that ye are My disciples: if you have love one for another.”

Jeff Ostrowski · March 21, 2016

A Church Music Issue Nobody Will Touch

Numerous articles have been written about Cardinal Sarah’s “foot washing” communique.

Jeff Ostrowski · March 19, 2016

PDF Download • “Chants Abrégés des Graduels, des Alleluias, et des Traits”

Simplified according to ancient psalm tones.

Jeff Ostrowski · March 19, 2016

Footage From 1968 • Pope Paul VI Giving Out Palms

The Cardinals don’t need to wear red—they have it on already!

Jeff Ostrowski · March 16, 2016

Sean McDermott’s “Virgo Dei Genitrix”

Do you agree this “live” recording is sung with excellence?

Jeff Ostrowski · March 16, 2016

Printable Passion Booklets (PDF)

These might be helpful to some!

Jeff Ostrowski · March 15, 2016

Brand New • “Saint Paul Hymnal”

Msgr. Andrew R. Wadsworth served on the advisory committee for this hymn book!

Jeff Ostrowski · March 14, 2016

“Liturgy Shaming”

They’re doing the very thing they say they deplore!

Jeff Ostrowski · March 13, 2016

Can You Find The Error Here?

The problem with trying to revise liturgical books too quickly…

Jeff Ostrowski · March 12, 2016

PDF Download • Spanish Cathedral Music (1961)

“On Holy Saturday in 1545, while the pope and several cardinals were present, two of the oldest choir members flew at each other during the blessing of the new oils…”

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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

“Life need not mean something. Life is something. And what is it? It is: —the present moment (the only one I really have); —my body and soul; —the task at hand; Almighty God, (source of everything) asks just one thing: that I put my body and my soul into this one moment, this one task … that I might do it as God desires it to be done.”

— Based on an article by Robert Keim

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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