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Corpus Christi Watershed

We’re a 501(c)3 public charity established in 2006. We have no endowment, no major donors, no savings, and run no advertisements. We exist solely by the generosity of small donors.

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Views from the Choir Loft

President's Corner

Jeff Ostrowski · March 1, 2024

“Simplified” Keyboard Accompaniment

Are you an inexperienced organist? Were you formally a pianist? I invite you to download this simplified organ accompaniment for hymn #124 in the Saint Jean de Brébeuf Hymnal. I’m toying with the idea of creating a whole bunch of these, to benefit amateur organists. What is your opinion of such a project? Let me […]

Jeff Ostrowski · February 15, 2024

Offered in a Spirit of Dialogue

Pope Francis said famously: “To dialogue entails a cordial reception, not a prior condemnation.” The following brief utterances of mine are offered in that spirit. Pope Saint Pius X called the sacred liturgy “the primary and indispensable source of the true Christian spirit.” If the reformers had told the fathers of Vatican II they desired […]

Jeff Ostrowski · February 14, 2024

Polyphony For Three Voices!

Writing excellent music is easier in four voices than three. We often sing from MATRI DIVINAE GRATIAE, a 3-voice collection by Kevin Allen for Soprano, Alto, and Bass. Someone made a recording of my volunteer choir singing “Si Ambulávero” (from that collection). This “raw recording” starts toward the end of the psalm tone then launches […]

Jeff Ostrowski · February 10, 2024

PDF Download • “Chant Chart”

A thoughtful priest from another country wrote me a magnificent message praising a PDF comparison chart I recently posted. It deals with “staffless” CARMEN GREGORIANUM (Gregorian Chant). Download it for free by scrolling to the bottom of this article. Of course, I hope you will read the article instead of just scrolling past it.

Jeff Ostrowski · February 7, 2024

“Somber Song!” • Sexagesima Sunday

As we approach the holy season of Lent, the prayers and readings become more lengthy. When we arrive at Easter, the prayers and readings will become extremely brief. As we get closer to Lent, some of the music becomes quite somber. I can’t think of a more somber piece than the INTROIT for Sexagesima Sunday. […]

Jeff Ostrowski · January 27, 2024

“Saint Mark” • Hymn Tune

Regarding the hymn tune called “ST MARK”—have you ever heard or sung this? If you scroll towards the bottom of this recent article, you can hear my choir (which is made up 100% of volunteers) singing it. Some people say the ST MARK melody sounds a little ‘protestant.’ What do you think? I rather like […]

Jeff Ostrowski · January 24, 2024

“Seeking Employment” • Please help!

You can download my official résumé.

Jeff Ostrowski · January 18, 2024

Gregorian Chant … with a drone?

It’s possible to sing Carmen Gregorianum with a drone note (a.k.a. “ison”) but is this always a good idea? I’ve heard it done very poorly. We tried singing GLORIA IX with an ison last Sunday. Feel free to listen to this excerpt (Mp3) and let me know your thoughts.

Jeff Ostrowski · January 18, 2024

Abbat Pothier on Gregorian Chant

“There is, then, in the Church, in the Catholic liturgy, a music that, as we have just stated, is both a word and a song, a music rich and powerful, although simple and natural, a music that is not self-seeking, which does not attend to itself but comes forth as the spontaneous utterance of religious […]

Jeff Ostrowski · January 12, 2024

Organ Accompaniment Booklet (25 pages)

Those who celebrate VESPERS each week may wish to download my organ accompaniment booklet (25 pages) for the 2nd Sunday after Epiphany. This was originally released about a year ago (link), but minor improvements have been made.

Jeff Ostrowski · January 11, 2024

Know your hymns? How Well?

Several singers from my choir recently recorded this beautiful hymn (Mp3), using famous lyrics from the Brébeuf Hymnal. How well do you know your hymns? Can you name that tune? If so, please email us. If you correctly name that tune, I’ll declare: “You really know your hymns!”

Jeff Ostrowski · January 8, 2024

Organ? Or SATB unaccompanied?

Pipe organ (with voices) or unaccompanied SATB? Which do you prefer? Yesterday at Mass, my volunteer choir gave you an opportunity to compare “apples to apples.” Simply click here and compare the first verse with the second. For the record, that melody is called by various names: ALTONA, VOM HIMMEL HOCH, ERFURT, and so on.

Jeff Ostrowski · January 8, 2024

Simple “Salve Regina” • Its Origins

In the past, I have attempted to determine the origins of the “simple” Salve Regina chant. When it comes to the so-called “restored” plainsong books, the earliest instance I can find (of the simple version) is in the LIBER RESPONSORIALIS, published in 1895, a marvelous book based upon the groundbreaking research of Dom Joseph Pothier. […]

Jeff Ostrowski · January 3, 2024

Do You Recognize This “Christmas” Tune?

Over the last 70 years, ST VENANTIUS has fallen out of favor. One reason might be that many harmonizations of it are “chunky.” I was pleased to see the Brébeuf Hymnal adopted the harmonization by Dom Gregory Murray (probably the finest ever created for ST VENANTIUS). This morning, I created this pipe organ recording. The […]

Jeff Ostrowski · December 31, 2023

PDF • January 1st (Organ Accomp. Booklet)

Anyone who wishes to may download the Organ Accompaniment Booklet (22 pages) I created for FIRST VESPERS of January 1st. That feast has various names, including “In Octava Nativitatis Domini.” These organ accompaniment booklets take forever to make!

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Corpus Christi Watershed

President’s Corner

    Luis Martínez Must Go!
    Sevilla Cathedral (entry dated 13 December 1564): The chapter orders Luis Martínez, a cathedral chaplain, to stay away from the choirbook-stand when the rest of the singers gather around it to sing polyphony—the reason being that “he throws the others out of tune.” [Excerpt from “The Life of Father Francisco Guerrero.”]
    —Jeff Ostrowski
    Urgent! • We Desperately Need Funds!
    A few days ago, the president of Corpus Christi Watershed posted this urgent appeal for funds. Please help us make sure we’re never forced to place our content behind a paywall. We feel it’s crucial that 100% of our content remains free to everyone. We’re a tiny 501(c)3 public charity, entirely dependent upon the generosity of small donors. We have no endowment and no major donors. We run no advertisements and have no savings. We beg you to consider donating $4.00 per month. Thank you!
    —Jeff Ostrowski
    “Booklet of Eucharistic Hymns” (16 pages)
    I was asked to create a booklet for my parish to use during our CORPUS CHRISTI PROCESSION on 22 June 2025. Would you be willing to look over the DRAFT BOOKLET (16 pages) I came up with? I tried to include a variety of hymns: some have a refrain; some are in major, others in minor; some are metered, others are plainsong; some are in Spanish, some are in Latin, but most are in English. Normally, we’d use the Brébeuf Hymnal—but we can’t risk having our congregation carry those heavy books all over the city to various churches.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

“The argument moves from the existence of the thing to the correctness of the thing: what is, ought to be. Or, a popular variant: if a thing is, it doesn’t make any difference whether it ought to be—the correct response is to adjust, to learn to live with the thing.”

— ‘L. Brent Bozell, Jr.’

Recent Posts

  • Luis Martínez Must Go!
  • Pope Pius XII Hymnal?
  • PDF Download • “Gospel Acclamation” for 29 June (Solemnity of Saints Peter and Paul, Apostles)
  • “Hybrid” Chant Notation?
  • Available! • Free Rehearsal Videos for Agnus Dei “Mille Regretz” after Gombert (d. 1560)

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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.

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