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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 · July 3, 2021

PDF Download • “Polyphonic Creed Extension” (Perfect Canon Between Soprano & Alto)

This fabulous technique is common in Germanic countries…

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Jeff Ostrowski · July 2, 2021

Free Online Movie! • “Scarlet and the Black” (1983)

Telling the true story of Monsignor Hugh O’Flaherty, a Catholic priest who saved thousands of lives during WW2.

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Jeff Ostrowski · June 30, 2021

30 June 2021 • “External Solemnities”

A document from 1822 shows that 29 June, the Feast of Saints Peter and Paul, used to be a Holy Day of Obligation in the United States. By 1864 it was no longer a Holy Day of Obligation—but the bishops of the United States were asked to celebrate it “solemnly” on the following Sunday, which […]

Jeff Ostrowski · June 29, 2021

“Talk Is Cheap” • Advice For Music Directors

If you fail to carefully plan your rehearsal, you’ll be eaten alive. And rightfully so!

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Jeff Ostrowski · June 28, 2021

28 June 2021 • (Live Rec.) Perfect Canon

A few weeks ago, we posted a perfect Canon by Giovanni Maria Nanino (d. 1607), who was a colleague of Palestrina. Here is a Live Recording by a volunteer choir. The score scrolls by as the singers perform it. It was recorded yesterday at Mass.

Jeff Ostrowski · June 28, 2021

28 June 2021 • “Progress is what counts…”

Like so many others, we lost about a year’s worth of rehearsals due to Covid19. We are trying to make up for lost time, and we have begun learning Father Guerrero’s Missa De Beata Virgine II published in Rome circa 1582. Here is a 37 second audio clip recorded at Mass last Sunday. We have […]

Jeff Ostrowski · June 26, 2021

26 June 2021 • “Twenty Seconds”

I could not do my job without the Brébeuf Hymnal. Here’s a Live Recording (20 seconds) from last night’s Mass. Our volunteer choir is frequently called upon—at the last second—to sing for first Masses, solemn high Masses, dedication Masses, and so forth. With the Brébeuf Hymnal, I can always pull out marvelous, wonderful, thrilling songs […]

Jeff Ostrowski · June 25, 2021

PDF Download • Pentecost Sequence In English! — Gregorian Notation w/ Organ Accompaniment

Does plainsong work in English? It actually can!

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Jeff Ostrowski · June 22, 2021

PDF Download • Colossally Stupendous “Missal for the Faithful” — 1,142 pages

This is a large file (172 MB), but trust me! You will love it.

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Jeff Ostrowski · June 19, 2021

Hymn Translations That Don’t Rhyme?

The Fulton J. Sheen Missal (1961) does something rather puzzling…

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Jeff Ostrowski · June 17, 2021

Attack on “Female Organists” • (Not Kidding)

This liturgical controversy lasted for fifty years!

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Jeff Ostrowski · June 16, 2021

“Te Deum Laudamus” • Booklet fits on a single page!

Don’t ask me how this booklet works … but it does.

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Jeff Ostrowski · June 15, 2021

Hymn • “Christ is King” (Father Ivor Daniel) + Rehearsal Videos!

“Once there were lost islands, but most of them have been found…”

Jeff Ostrowski · June 15, 2021

14 June 2021 • “From Rehearsal…”

One of our choristers recorded this audio excerpt from a recent rehearsal we had. I know there are certain people on the internet who claim that “proper voice leading & harmonies died with Bach in 1750AD…anything goes these days.” But I could not disagree more with such an assertion. The proper rules of harmony and […]

Jeff Ostrowski · June 14, 2021

1975 • Jerry Brown Vs. William F. Buckley: “Was Thomas Aquinas Liberal or Conservative?”

Ronald Reagan stopped being governor of California in 1975; then Jerry Brown was elected. Bizarrely, Brown ended his final term in 2019.

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Corpus Christi Watershed

President’s Corner

    Music List • (3rd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 3rd Sunday of Lent (8 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its stern INTROIT (“Óculi mei semper ad Dóminum”) is breathtaking, and the COMMUNION (“Qui bíberit aquam”) with its fauxbourdon verses is wonderful. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    “Samaritánæ” (3rd Sunday of Lent)
    With regard to the COMMUNION for the 3rd Sunday of Lent (Year A), the Ordo Cantus Missae—which was published in 1969 by the Vatican, bearing Hannibal Bugnini’s signature and approbation in its PREFACE—inexplicably introduced a variant melody and slightly different words, as you can see by this comparison chart. When it comes to such items, they’re always done in secrecy by unnamed people. (Although it is known that Dom Eugène Cardine collaborated in the creation of the GRADUALE SIMPLEX, a book considered by some to be a travesty.)
    —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

Quick Thoughts

    Grotesque Pairing • “Passion Chorale”
    One of our rarest releases was undoubtably this PDF scan of the complete Pope Pius XII Hymnal (1959) by Father Joseph Roff, a student of Healey Willan. One of the scarcest titles in existence, this book was provided to us by Mr. Peter Meggison. Back in 2018, we scanned each page and uploaded it to our website, making it freely available to everyone. Readers are probably sick of hearing me say this, but just because we upload something that doesn’t necessarily mean it’s wonderful or worthy of imitation. We upload many publications precisely because they are ‘grotesque’, interesting, or revealing. Whereas the Brébeuf Catholic Hymnal had an editorial board that was careful and sensitive vis-à-vis pairing texts with tunes, the Pope Pius XII Hymnal (1959) seems to have been rather reckless in this regard. Please take a look at what they did with the PASSION CHORALE and see whether you agree.
    —Jeff Ostrowski
    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

Random Quote

“Each of our sins was one more thorn in our Lord’s crown; one blow the more to His scourging.”

— Cardinal Merry Del Val (shortly before his death)

Recent Posts

  • Music List • (3rd Sunday of Lent)
  • “National Survey” (Order of Christian Funerals) • By the USCCB Secretariat of Divine Worship
  • “Samaritánæ” (3rd Sunday of Lent)
  • Grotesque Pairing • “Passion Chorale”
  • PDF Download • “Ubi Caritas” (SATB)

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