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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

Articles

Corpus Christi Watershed · December 16, 2025

“He never had a single day of conflict with anyone.”

Upon the death of of the Very Reverend Canon Edgard De Laet.

Jeff Ostrowski · December 14, 2025

PDF • “Standard Gregorian Chants for Schools, Churches, Seminaries, & Convents” (1946) —123 pages

Until a few days ago, I knew nothing of this (extremely rare) book. Now it’s been scanned and uploaded—free to all.

Mark Haas · December 13, 2025

The “Word of the Father” Chord: Theology and Harmony Meet at Christmas

It is fitting that the most exquisite chord in Adeste Fideles coincides with the most profound line of theology.

Jeff Ostrowski · December 10, 2025

Crucial Tips • “Teaching Children How to Sing”

When it comes to the children, I help them memorize each word…

Jeff Ostrowski · December 10, 2025

Soloists in Gregorian Chant?

An “ensemble of soloists” will never sound the same as a true choir.

Jeff Ostrowski · December 7, 2025

“Alma Redemptóris Mater” • Everything There Is To Know About This Marian Antiphon

Including a new harmonization for the pipe organ.

Corpus Christi Watershed · December 5, 2025

(5 Dec. 2025) • Pope Leo XIV Speaks on Liturgical Music

“In the liturgy, in particular, singing is never a ‘soundtrack’, a simple backdrop, but is intended to lift the soul…” —Pope Leo XIV

Mark Haas · December 3, 2025

PDF Downloads • 5 Simple Palestrina Pieces

A collection of Palestrina works that are not only stunningly beautiful but also surprisingly accessible.

Dr. Alfred Calabrese · December 2, 2025

Dr. Alfred Calabrese • “My Invitation To You”

EWTN will broadcast the Mass later on that same evening.

Jeff Ostrowski · December 1, 2025

PDF Download • Agnus Dei Polyphonic “Choral Extension” (Simple Round by Ravenscroft)

It’s hard to banish that round once it enters your ears!

Guest Author · November 27, 2025

“Sacred Music Pilgrimage to Italy” with Grace Feltoe

Including a tour of the Pontifical Institute of Sacred Music with Father Robert Mehlhart, OP.

Jeff Ostrowski · November 25, 2025

Kid’s Repertoire • “Jeffrey’s 3 Recommendations”

Growing up, I remember hearing this adage…

Jeff Ostrowski · November 25, 2025

A Quote Worth Reading

From a mother of 11 children whose brother-in-law is a Catholic priest.

Jeff Ostrowski · November 24, 2025

PDF Download • ‘Choral Extension’ for the Sanctus (especially useful in the Ordinary Form)

It’d be easier to accept if they admitted they were explicitly contradicting Vatican II … but instead, they lied egregiously.

Mark Haas · November 20, 2025

Kid’s Repertoire • 3 Recommendations (Mark Haas)

“My children’s choir absolutely loves this piece.”

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Corpus Christi Watershed

President’s Corner

    “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
    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

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

“Catholics in America have been the heirs of a sentimental and subjective hymn tradition that, for some reason or other, has taken a deep and fast hold on the fancy of the average person.”

— Fr. Francis Brunner (1953)

Recent Posts

  • “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)
  • PDF • “Cantus Mariales” (192 pages)

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