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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

Missale Vetustum

Jeff Ostrowski · December 27, 2025

“Kaitrin Drost Strikes Again!” • Plus a Few Random Thoughts and Tirades by Jeff Ostrowski

Imagine walking up into a choir loft and sounding like these young ladies without rehearsal.

Mark Haas · July 4, 2025

“My First Year with the Latin Mass” • A Music Director’s Perspective

“Assisting at the Traditional Latin Mass has changed me.” —Mark Haas

Corpus Christi Watershed · July 4, 2025

Boston Auxiliary Bishop: “In offering the Traditional Mass for the first time, after removing the vestments, I knelt in the back pew and wept.”

As of 4 July 2025, Bishop Reed’s post on Twitter had received 188,800 views.

Jeff Ostrowski · June 19, 2025

“Dom Jausions had a skilled hand. His transcriptions are masterpieces of neatness & precision.”

A few days ago, Dominique Gatté released something quite extraordinary.

Jeff Ostrowski · June 4, 2025

“Breathtaking Photographs” • First Mass of Father Michael Caughey, FSSP (Muskegon, MI)

Our choir sang so beautifully for this special Mass!

Jeff Ostrowski · May 27, 2025

PDF Download • “Entrance Chant” for 29 June … Which Falls on a Sunday This Year!

Growing up, we had an encyclopedia in our basement—but that was hardly the equivalent access to the internet!

Jeff Ostrowski · May 8, 2025

Cardinal Prevost (Pope Leo XIV) “Privately Offered the TLM in His Private Chapel”

Allegedly, the source of this information “had the only indult to say the TLM at the USCCB office in Baltimore back in the 1990s.”

Andrea Leal · April 2, 2025

“What is the Best Catholic Missal?” • Video Review by Catholic Family News

“I am shocked this isn’t more well known; this is really a spectacular work.” —Catholic Family News

Jeff Ostrowski · October 29, 2024

A Suggestion for Ordinary Form Masses

The idea developed (somehow) that having the priest wait 15 minutes for an item he needs is “good and reverent” liturgy. But that’s false.

Corpus Christi Watershed · September 26, 2024

(In Canada) • Today is the “Feast of Saint Isaac Jogues & Companions”

Several stained glass images of Saint Isaac Jogues.

Jeff Ostrowski · May 20, 2024

ABC’s “The View” Attacks the Traditional Latin Mass

If you were arrested and charged with being a Christian, would there be enough evidence to convict you?

Jeff Ostrowski · November 21, 2023

Jeff Ostrowski’s Performance of Plainsong Attacked as “Inartistic”

The special Vigil of Christmas “Alleluia” sung according to the official rhythm of the Catholic Church.

Jeff Ostrowski · November 17, 2023

Pope Saint Paul VI did not outlaw the TLM

This video shows a signatory of the famous “Agatha Christie Indult” talking about Glenn Gould (specifically his Bach interpretations).

Jeff Ostrowski · November 8, 2023

“No Fourth Sunday of Advent” (EF)

In the Extraordinary Form (“Missale Vetustum”) because Christmas falls on a Monday in 2023, the Vigil of the Nativity of Our Lord takes precedence over the Fourth Sunday of Advent. This usually only happens about every six years or so. I will miss the 4th Sunday of Advent, but the VIGIL Mass is also quite […]

Jeff Ostrowski · October 2, 2023

Palestrina Would Not Recognize This! • (Plus: Hopeful Signs)

On 21 September 2023, composers Dan Schutte, Roc O’Connor, and Bob Dufford stood in the Sanctuary of Old St. Patrick’s Church…

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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

[Speaking of those who wish to eliminate Latin from the liturgy.] “One may well wonder what the origin is of this new way of thinking and this sudden dislike for the past; one may well wonder why these things have been fostered.”

— Pope Saint Paul VI (15 August 1966)

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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