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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

President's Corner

Jeff Ostrowski · May 19, 2022

19 May 2022 • “Trochee Trouble”

I’m still trying to decide how to visually present the “pure” Editio Vaticana scores, using what is (technically) the official rhythm of the Church. You can download my latest attempt, for this coming Sunday. Notice the “trochee trouble” as well as the old issue of neumes before the quilisma.

Jeff Ostrowski · May 16, 2022

16 May 2022 • Harmonized Chant?

This year’s upcoming Sacred Music Symposium will demonstrate several ways to sing the CREDO at Mass. This is because—for many parishes—to sing a full-length polyphonic CREDO by Victoria or Palestrina is out of the question. Therefore, we show options that are halfway between plainsong and polyphony. You can hear my choir rehearsing a section that […]

Jeff Ostrowski · May 14, 2022

14 May 2022 • “Pure” Vatican Edition

As readers know, my choir has been singing from the “pure” Editio Vaticana. That is to say, the official rhythm which—technically—is the only rhythm allowed by the Church. I haven’t figured out how I want the scores to look, so in the meantime we’ve been using temporary scores that look like this. Stay tuned!

Jeff Ostrowski · May 14, 2022

14 May 2022 • Gorgeous Book

If there is a more beautiful book than Abbat Pothier’s 1888 Processionale Monasticum, I don’t know what it might be. This gorgeous tome was today added to the Saint John Lalande Online Library. I wish I owned a physical copy.

Jeff Ostrowski · May 3, 2022

Sound Familiar?

1 June 1579: “The chapter passes a rule that anyone ascending to the new organ without official permission shall be fined a month’s pay.” 26 October 1579: “The altar boys remain always separate and distinct from choirboys—the one group learning only plainchant and assisting at the altar, the other living with the chapel-master and studying […]

Jeff Ostrowski · April 25, 2022

Choirs Love This Piece!

Back in 2001, I created an arrangement of “O Filii Et Filiae” based on the work of Monsignor Jules Van Nuffel. You can access free rehearsal videos at #5909. Choirs absolutely love singing this piece. You can hear my volunteer choir singing a live recording.

Jeff Ostrowski · April 14, 2022

Holy Thursday Introit • “Pure” Vaticana

Many people wonder what Cantus Gregorianus sounds like when sung according to the “official rhythm.” You can hear the Introit for Maundy Thursday sung that way—i.e. according to the “pure” Editio Vaticana—if you click here. Technically, this is the only interpretation allowed by the Church; cf. the letter of Cardinal Martinelli (18 February 1910).

Jeff Ostrowski · April 12, 2022

“Ah, Holy Jesus, How Hast Thou Offended?”

A wonderful passiontide hymn is #692 in the Brébeuf hymnal. It works especially well for Communion. Here is a live recording from last Sunday, sung by the fabulous female singers in my volunteer parish choir.

Jeff Ostrowski · April 10, 2022

PDF Download • “Palm Sunday Hymn”

During the procession on Palm Sunday, the 1962 rubrics allow alius cantus in honorem Christi Regis—“a hymn or song in honor of Christ the King.” A simple yet beautiful Gregorian hymn you might consider is Te Sæculorum Principem, which was composed for the feast of Christ the King by Father Vittorio Genovesi (d. 1967). The […]

Jeff Ostrowski · April 5, 2022

Free Organ Accompaniment • “Vexilla Regis”

During Passiontide, the hymn at Vespers is the mighty Vexilla Regis Prodeunt of Bishop Venantius Fortunatus. In 2015, I composed an organ accompaniment for this hymn with each verse written out. This comes in pretty handy on occasions when the organist must “lead the hymn from the organ bench.” Please feel free to download my […]

Jeff Ostrowski · March 20, 2022

Names Have Been Revealed!

The clinicians for Sacred Music Symposium 2022 have been officially released! You can see them by downloading this PDF file. Please help us spread the word. Thank you!

Jeff Ostrowski · March 8, 2022

Surprise! • Bas PDF from Paris

A generous person in Paris sent us the 1921 organ accompaniment to the Requiem Mass (“Missa Pro Defunctis”) harmonized by Julius Bas, who was associated with the Abbey of Solesmes. You can download the entire PDF file for free at the Lalande Library. I must say, what Bas does with Dies Irae sequence is fascinatingly […]

Jeff Ostrowski · March 5, 2022

Marvelous News From Pope Francis!

Two members of the Priestly Fraternity of Saint Peter recently met with Pope Francis at the Vatican. (You can read the whole story.) The Pope insisted that the FSSP should be “preserved, protected, and encouraged.” Moreover, Pope Francis made it clear that institutes such as the Fraternity of Saint Peter are not affected by the […]

Jeff Ostrowski · February 27, 2022

PDF Download • Quinquagesima Vespers

I created a booklet for my choir. (The congregation already has their own booklet). This booklet is for Quinquagesima Vespers, and you can download it if you desire. Print on “double sided” and the booklet will come out correctly. The polyphonic Magnificat is not included in that booklet, since the choir members have it in […]

Jeff Ostrowski · February 26, 2022

FEEDBACK • 25 February 2022

We love receiving mail from our readers. Here are two messages we received today from two different music directors in Canada: (1) “We are a small Schola in Yukon, Canada and love your practice videos repertoire.” (2) “Thank you so much for the indispensable work that you are doing to rebuild the musical life of […]

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Quasi Modo Sunday”
    The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.
    —Jeff Ostrowski
    ‘German’ Introductions for Hymns
    German organ books have an enchanting habit of including introductions for each and every hymn. For example, consider this snazzy example found in a German hymnal published in 1902. In the Saint Jean de Brébeuf Hymnal, that melody is called “Laudes Mariae” and was married to Omni Die Dic Mariae, with a popular English translation (“Daily, daily, sing to Mary”) by Father Henry Bittleston, an Oratorian priest. Notice they also added a ‘tailpiece’ or ‘playout’ or postlude at the end—a very German thing to do!
    —Jeff Ostrowski
    Buckfast Abbey Weighs In
    Dom John Stéphan was a Benedictine monk of Buckfast Abbey in South Devon, England. On 4 February 1933, he published this interesting letter in THE TABLET. Have you seen the exterior of Buckfast Abbey? It’s beyond gorgeous. I doubt there’s a more arresting Abbey in the entire world. Dom Stéphan’s letter is concerning this momentous collection, which our organization obtained, scanned, and uploaded.
    —Jeff Ostrowski

Quick Thoughts

    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski
    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

Random Quote

“It will not be Rome to tell you what you should do, no: because you have the charism. …you have the Holy Spirit for this. If Rome were to begin to make the decisions it would be a blow to the Holy Spirit, who works in the particular Churches.”

— Pope Francis (27 March 2023)

Recent Posts

  • PDF Download • “Quasi Modo Sunday”
  • ‘German’ Introductions for Hymns
  • Fascinating Interpretation of the “Regina Caeli” (Solemn Tone)
  • PDF Download • “Sprinkling Rite” + Psalm Verses
  • Buckfast Abbey Weighs In

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