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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

Monsignor Francis P Schmitt

Jeff Ostrowski · February 12, 2026

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

This melody is quite ancient.

Jeff Ostrowski · May 12, 2025

“Sanctus XVIII” • Peculiar-Yet-Haunting Accompaniment (Sent To Us)

“When the Vatican Edition began coming off the press in 1905, its strongest supporters did not expect it to last until 1960…” —Mons. Schmitt

Jeff Ostrowski · October 11, 2024

“Unsolved Mysteries” • What Happened To This Institute?

Dom Ermin Vitry, OSB, was in charge of building the pipe organ for the Cathedral of Saint Mary of the Immaculate Conception in Peoria, IL.

Jeff Ostrowski · September 12, 2023

“Can No One Defend This?” • Why Everyone Should Sing From the Official Edition

I can never go back!

Jeff Ostrowski · July 13, 2023

PDF Download • 3-Voice “Agnus Dei” + Suggestions to Improve Music at Ordinary Form Masses

Should music at the Ordinary Form be identical to music at the Extraordinary Form?

Jeff Ostrowski · July 5, 2023

“A Patriotic Hymnal” • (Not Kidding!)

“Hymns for the Use of the Catholic Church in America” was published in Baltimore more than 200 years ago.

Jeff Ostrowski · June 6, 2023

“Best & Worst Responses” • This Survey Was Responded To By 300+ Church Musicians

You’re probably thinking: “Jeff, if you think Father Rossini’s narrow-mindedness was bad, get ready for a rude awakening when you see what we’re up against in 2023.”

Jeff Ostrowski · May 24, 2023

Analysis • “Archaic and Quack Ideas on Chant”

“Gentlemen: Nobody is going to follow the archaic and quack ideas on Chant you are trying to propagate.” Mr. John Sandar

Jeff Ostrowski · May 2, 2023

Should Chant Be Accompanied On The Organ?

As late as 1924, Dom Mocquereau mentioned Dom Desrocquettes “whose beautiful and discreet accompaniments I hear every day at Solesmes.”

Follow the Discussion on Facebook

Jeff Ostrowski · March 21, 2023

“Go!” • The Word That Changed My Life Forever

As Americans, we’re “bred from birth” to think of ourselves as little gods who already know everything and require no correction.

Jeff Ostrowski · January 11, 2023

PDF Download • Max Springer’s Gradual in Modern Notation (870 pages) — Extravagantly Rare!

In addition to this rare book by Max Springer (870 pages), I release the draft copy of a new Gregorian project (157 pages).

Jeff Ostrowski · January 6, 2023

What Exactly Is Dr. Peter Wagner Talking About?

“These manuscripts had to be sought out in the public or capitular libraries, whose conservators were often hardly supportive of—if not outright hostile to—the reproduction of their treasures.”

Jeff Ostrowski · December 15, 2022

PDF • “Rorate Mass Musical Booklet” (39 pages)

In my humble opinion, that ‘explanation’ is sheer, unadulterated gobbledygook.

Jeff Ostrowski · December 3, 2022

PDF Download • Organ Accompaniment Booklet: Vespers (2nd Sunday of Advent) — 27 pages

Dom Gajard said to Jean Langlais: “Hear the blackbird! It doesn’t know what an ‘ictus’ is, yet it sings better than we.”

Jeff Ostrowski · December 9, 2021

Archbishop Lefebvre Pushed For Vernacular Readings?

Louis Bouyer—the priest chosen to compose “Eucharistic Prayer II”—condemned the liturgical reforms when he saw the results.

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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

I want to say one thing to you strongly, especially today: virginity for the Kingdom of God is not a “no,” it is a “yes!”

— Pope Francis (10/4/2013)

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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