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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 · August 25, 2022

Have You Done This?

Friends, have you done this yet? I’m talking about subscribing to our free mailing list. We beg you! Do this as soon as possible. Scroll to the bottom of any article, and you will see the place you input your email.

Jeff Ostrowski · August 15, 2022

PDF • “Organ Interludes” (Manuals Only)

In graduate school, one is taught a valuable lesson: if you emphasize everything, nothing is emphasized. In other words, putting every other word in bold or italic (or both) wrecks your paper. I never to use the word “best”—but today I make an exception. The book of organ interludes released today by my colleague is […]

Jeff Ostrowski · August 4, 2022

For the Upcoming Choir Season!

Last week, I posted an SATB choral setting of the SANCTUS in a ‘contemporary’ style. You might want to consider this piece for two reasons: (1) It’s extremely brief; (2) Free rehearsal videos are available for each individual part. The piece is by Father Lhoumeau.

Jeff Ostrowski · July 12, 2022

PDF Download • “Sunday Vespers” (22 pages)

In spite of its imperfections, creating this (draft) booklet required much more effort than I had anticipated.

Jeff Ostrowski · July 11, 2022

11 July 2022 • FEEDBACK

Someone who heard the CCW plainsong recordings with NOH accompaniment says: “For years I have travelled the continents and crossed the oceans of Gregorian chant in search of a composition and interpretation as sublime as this. The text and the melody are interwoven in a game of mirrors with the interpreters, the singer and the […]

Jeff Ostrowski · July 11, 2022

Gregorian Chant • Its “True” Rhythm

I’m dumbstruck (with joy) to see that my recent video presentation on plainsong rhythm has garnered quite a number of “views” on VIMEO. I also made the full presentation available on YouTube, and—as I write these words—it has collected 700+ views. How cool is it that folks are still interested in the rhythm of Cantus […]

Jeff Ostrowski · July 2, 2022

Across the Pacific • Alto is “Raving”

From Asia: “I held choir rehearsal yesterday and one of the choir members (singing Alto) was just raving about how she loved the layout of the Brébeuf Choral Supplement because she didn’t have to look up and down for both music and verse—and she loved the ease with which she could sing her part because […]

Jeff Ostrowski · June 30, 2022

Alabama Assessment!

We received this evaluation of Symposium 2022 from an Alabama participant: “Oh, how the Symposium echoed the words of Cardinal Merry Del Val: …choosing only what is most conformed to Thy glory, which is my final aim. In one short and fast paced week, the faculty and attendees showed me the hand of God and […]

Jeff Ostrowski · June 12, 2022

PDF Download • Trinity Sunday (22 pages)

Feel free to download this Organ Accompaniment Booklet for Trinity Sunday (Second Vespers). Notice how the modes progress by number. Psalm 1 is mode 1; Psalm 2 is mode 2; Psalm 3 is mode 3; Psalm 4 is mode 4; Psalm 5 is mode 5. I am told by an expert that other feasts (such […]

Jeff Ostrowski · June 11, 2022

10 June 2022 • “Official” rhythm of plainsong

I continue to search for the most beautiful way to present the “pure” Editio Vaticana scores. (Technically, the “pure” rhythm of the official edition is what everyone is supposed to use.) You can download my latest attempt, which is the Introit for this coming Sunday: Feast of the Most Holy Trinity. Because this is not […]

Jeff Ostrowski · June 7, 2022

7 June 2022 • FEEDBACK

From Chelan, Washington: “CCWatershed is a God-sent resource that I can’t function without! Such great work by the team to bring beauty back to our liturgy!” From Gainesville, Florida: “I am so appreciative of the work, of my brothers and sisters in music!” From Troutman, North Carolina: “Keep up the excellent work in service of the Liturgy!”

Jeff Ostrowski · June 5, 2022

PDF Download • (Organ Accompaniment)

I created this organ accompaniment booklet for organists who will accompany Vespers on Pentecost Sunday. Feel free to download it; it might give you some ideas or inspiration. Be warned: It looks pretty sloppy. (The organist is the only one who sees it.)

Jeff Ostrowski · June 3, 2022

Revelation • “Re: The Official Rhythm”

A very intelligent singer admitted that only yesterday did he finally come to understand what a “melismatic mora vocis” is. Only yesterday did he come to understand the “white notes” (blank spaces). You can see the Introit for Pentecost Sunday only has two instances of MMV (“melismatic mora vocis”).

Jeff Ostrowski · June 3, 2022

3 June 2022 • FEEDBACK

From Saint Petersburg, Florida: “Thank you so much for all of your tireless and selfless work in building up the Kingdom of God and Helping us on the path toward heaven! Your work for many years now has borne much fruit in my life and in the lives of whom I work with. May the […]

Jeff Ostrowski · June 1, 2022

1 June 2022 • FEEDBACK

From Pennsylvania: “Thank you for all of the music on your website! It has been of immense help to me as a choir director.” From Minnesota: “Thank you for your awesome ministry! I started going to a Latin mass parish about 10 years ago, and this website has been indispensable to me. I could not […]

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Corpus Christi Watershed

President’s Corner

    Music List • (5th Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 5th Sunday of Lent (22 March 2026). If such a thing interests you, feel free to download it as a PDF file. Traditionally, this Sunday was called ‘Passion’ Sunday. Starting in 1956, certain church leaders attempted rename both ‘Passion’ Sunday and ‘Palm’ Sunday—but it didn’t work. For example, Monsignor Frederick McManus tried to get people to call PALM SUNDAY “Second Passion Sunday”—but the faithful rejected that. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Music List • (Holy Thursday, 2026)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for Holy Thursday, which is 2 April 2026. If such a thing interests you, feel free to download it as a PDF file. I’m not sure I’ve ever heard a more piercingly beautiful INTROIT, and I have come to absolutely love the SATB version of ‘Ubi cáritas’ we are singing (joined by our burgeoning children’s choir). I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    “O Escam Viatorum” • (Holy Thursday)
    When I was very young, I erroneously believed the four psalms provided by the 1957 Liber Usualis—for Communion on Holy Thursday—were the “correct” music to sing on that first day of the TRIDUUM SACRUM. Those four psalms are: Psalm 22 (Dóminus regit me et nihil mihi déerit); Psalm 71 (Deus judícium tuum regi da); Psalm 103 (Bénedic ánima méa); and Psalm 150 (Laudáte Dóminum in sanctis ejus). It turns out I was way out in left field! While nothing forbids singing those psalms, many other options are equally valid. Our volunteer parish choir will sing this COMMUNION PIECE (joined by our burgeoning children’s choir) on Holy Thursday during Holy Communion. Needless to say, this will happen after the proper antiphon from the GRADUALE ROMANUM has been sung.
    —Jeff Ostrowski

Quick Thoughts

    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
    Stumped by “Episcopalian Hymnal” (1910)
    Some consider Songs of Syon (1910) the greatest Episcopalian hymnal ever printed. As a Roman Catholic, I have no right to weigh in one way or the other. However, this particular page has me stumped. I just know I’ve heard that tune somewhere! If you can help, please email me. I’m talking about the text which begins: “This is the day the Lord hath made; In unbeclouded light array’d.” The book is by George Ratcliffe Woodward, and its complete title is: Songs of Syon: A Collection of Psalms, Hymns, and Spiritual Songs. Back in 2016, Corpus Christi Watershed scanned and uploaded this insanely rare book. For years our website was the sole place one could download it as a PDF file.
    —Jeff Ostrowski
    PDF Download • “Holy, Holy, Holy”
    For vigil Masses on Saturday (a.k.a. “anticipated” Masses) we use this simpler setting of the “Holy, Holy, Holy” by Monsignor Jules Vyverman (d. 1989), a Belgian priest, organist, composer, and music educator who ultimately succeeded another ‘Jules’ (CANON JULES VAN NUFFEL) as director of the Lemmensinstituut in Belgium. Although I could be wrong, my understanding is that the LEMMENSINSTITUUT eventually merged with “Catholic University of Leuven” (originally founded in 1425). That’s the university Fulton J. Sheen attended.
    —Jeff Ostrowski

Random Quote

Never before have men had so many time-saving devices. Yet, never before have they had so little free time. When the world unnecessarily accelerates, the Church must slow down.

— Archbishop Fulton J. Sheen

Recent Posts

  • PDF Download • “Ubi Caritas” (SATB)
  • Summer 2026 • “Gregorian Chant Course” at Aquinas College (Nashville, TN)
  • Music List • (5th Sunday of Lent)
  • Music List • (Holy Thursday, 2026)
  • “O Escam Viatorum” • (Holy Thursday)

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