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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

Louis Bouyer Oratorian 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.

Jeff Ostrowski · March 31, 2025

Possible Error? • 4th Sunday of Lent

Because the post-conciliar liturgical reforms were done with such haste, we sometimes find errors.

Veronica Moreno · March 23, 2025

PDF Download • Palestrina “Alleluia” (SATB) for the Ordinary or Extraordinary Form

Last week, a major bombshell was dropped with regard to two major publishing companies of Catholic hymnals.

Jeff Ostrowski · January 14, 2025

Was “Ordinary Time” Found in the 1962 Missal?

The answer might surprise you!

Corpus Christi Watershed · January 11, 2025

When Does “Christmas” End?

“I believe (though I could be wrong) the USCCB website is correct and Jeff is wrong.” —Father J. Haley

Corpus Christi Watershed · November 25, 2024

Bouyer on Liturgical Reform: “More intolerant and fussy than anything we’ve ever known.”

“Perhaps in no other area is there a greater distance between what the Council worked out and what we actually have.” —Professor Louis Bouyer

Jeff Ostrowski · July 4, 2024

PDF Download • “Entrance Chant” — 14th Sunday in Ordinary Time (Year B)

I’d love to hear you sing this!

Jeff Ostrowski · July 3, 2024

PDF Download • “Funeral Music List” (17 Pages)

What we do undeniably involves a type of “performance.”

Jeff Ostrowski · February 4, 2024

“When Does Christmas End?” • (Correct Answer)

Including the official hymn for February 2nd: the feast of the Purification.

Jeff Ostrowski · January 29, 2024

PDF Score • “Mass Setting I Wrote For Corrinne”

I demonstrate how the “Kyrie Eleison” can be adapted for use in the Extraordinary Form.

Jeff Ostrowski · January 8, 2024

PDF Download • Msgr. Hellriegel’s “Hand-Written” Hymnal (Organ Accompaniment) — 102 pages

A major announcement on 8 January 2024!

Jeff Ostrowski · February 11, 2023

Hymn for the Season of Septuagesima? • Yes!

Where did “Ordinary Time” come from?

Jeff Ostrowski · July 26, 2022

Open Letter to Bishop Roche • “12 Considerations”

I write in response to the 6 July 2022 statement by Pope Francis: “Make your voices heard! If they do not listen to you, shout even louder.”

Jeff Ostrowski · January 17, 2022

“Hymns for Small Choirs” • The Season of Epiphany

Destroying the season of Epiphany was in direct disobedience to Vatican II.

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

The Princess of the Palatinate once described German Protestantism to Louis XIV with this formula: “In our country, everyone makes up his own little religion.” Every priest, or almost every priest, is at this point today. All the faithful have to say is “Amen.” They are still blessed when the pastor’s religion does not change every Sunday, at the whim of his reading, the foolery he has seen others at, or at his own pure fancy.

— Professor Louis Bouyer (1968)

Recent Posts

  • “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
  • Solfege Volleyball: A Children’s Choir Game

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