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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

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Jeff Ostrowski · April 10, 2024

“Banish Wrong Notes!” • Hymns Simplified

In the past, I’ve mentioned how I can’t stand hearing wrong notes. I was playing LLANFAIR the other day, and I was hitting wrong notes. Earlier today, I created a simplified version which you can download for free. This famous tune (“LLANFAIR”) is often used on the feast of the Ascension, with “Hail the Day […]

Jeff Ostrowski · April 9, 2024

PDF Download • Responsorial Psalm for the 16th Sunday in Ordinary Time (Year B)

“This argument from silence is wildly improbable.” —Father John Parsons (2001)

Jeff Ostrowski · April 7, 2024

Jeff Writes A Song About Dr. Weaver And Himself

This article—a “mini-dissertation” on syllabic plainsong—writes songs using the names of various CCW authors.

Jeff Ostrowski · April 6, 2024

PDF Download • “Spanish Responsorial Psalm” (19th Sunday in Ordinary Time, Year B)

A lovely offering by the “Chaumonot Composers Group.”

Jeff Ostrowski · April 2, 2024

“Jesus Christ is Ris’n Today” (Simplified)

I hate hearing organists play wrong notes. I invite you to download this simplified organ accompaniment for hymn #699 in the Saint Jean de Brébeuf Hymnal. The hymn is “Jesus Christ Is Risen Today.” I’m toying with the idea of creating a whole bunch of these, to help amateur organists. The last one I uploaded was […]

Jeff Ostrowski · April 1, 2024

PDF Download • “Jeff’s Most Popular Choral Arrangement For Easter” (By Far)

My volunteer choir sang this arrangement during the offertory on Easter Sunday.

Jeff Ostrowski · March 27, 2024

“Saint Felix Creed” • Musical Setting for the Nicene Creed (Roman Missal, 3rd Edition)

Dedicated to my brother, Father Mark Ostrowski.

Corpus Christi Watershed · March 24, 2024

PDF Download • “Holy Week Music Schedule” • Saint Mary’s in Norwalk, Connecticut

Expect to hear Morales, Palestrina, Victoria, Pierre de la Rue, Tallis, Haydn, Gounod, Rovetta, Lassus, Byrd, Senfl, Taverner, Wingham, and more.

Jeff Ostrowski · March 22, 2024

“Victimæ Paschali Laudes” • Thirty-One (31) Different Versions — Including Organ Accompaniments

This version by Father Adrian Fortescue is fascinating!

Jeff Ostrowski · March 18, 2024

“Simplified” Accomp. (1,700 downloads)

The last one I uploaded was downloaded more than 1,700 times in a matter of hours. Therefore, folks seem interested in such a project.

Jeff Ostrowski · March 15, 2024

Jeff Ostrowski Attempts to Sing the Easter Introit

I opted for the Church’s official rhythm.

Corpus Christi Watershed · March 14, 2024

“Lenten Polyphony for Two Voices”

On 28 February 2024, we posted this article with two women singing at Mass. Specifically, they were singing a piece for Lent called “Open, O Hard and Sinful Heart.” Since that time, the video has garnered thousands of views on YouTube and reached more than 34,000 on Facebook. If you’d like to download a special […]

Jeff Ostrowski · March 12, 2024

PDF Download • Lenten Hymn + SATB Refrain

Professor Bouyer later admitted (in his memoirs) that his team of liturgical reformers had been doomed from the start, since their goal was “recasting from top to bottom—𝘢𝘯𝘥 𝘪𝘯 𝘢 𝘧𝘦𝘸 𝘮𝘰𝘯𝘵𝘩𝘴!—an entire liturgy which had required twenty centuries to develop.”

Corpus Christi Watershed · March 4, 2024

PDF Downloads • “Contemporary Sacred Music”

Readers often send us their compositions. Today, we’d like to share some!

Jeff Ostrowski · March 2, 2024

“The Most Captivating Chorale” • (J. S. Bach)

“The mocking reed, and cruell ſpear, Their hate, his love diſplay.”

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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

We cannot exaggerate our indebtedness to Dr. Julian’s “Dictionary of Hymnology,” a monumental work, without which we could not have reached the high standard of accuracy, as to both texts and authorship, which we set before us when entering upon our labours.

— Committee for “New English Hymnal” (1906)

Recent Posts

  • Pope Paul VI • “Sacrificum 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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