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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

    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    Music List • (5th Sund. Ordinary Time)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for this coming Sunday, 8 February 2026, which is the 5th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. You will probably notice it isn’t as ‘complete’ or ‘spiffy’ as usual, owing to some difficulties which took place this week.
    —Jeff Ostrowski
    PDF • “Communion” (5th Sunday in Ordin.)
    The COMMUNION ANTIPHON for this coming Sunday, 8 February 2026—which is the 5th Sunday in Ordinary Time (Year A)—is truly delightful. You can download the musical score completely free of charge. This text will be familiar to altar boys, because it’s PSALM 42. The Feder Missal makes the following claim about that psalm: “A hymn of a temple musician from Jerusalem: he is an exile in a heathen land, and he longs for the holy city and his ministry in the Temple there. The Church makes his words her own.”
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    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

It would be contrary to the Constitution to decree or even to hint that sung celebrations, especially of the Mass, should be in Latin.

— Annibale Bugnini attacking “Sacrosanctum Concilium” (§36)

Recent Posts

  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)
  • Gorgeous Image of Monks Singing!
  • “Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

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