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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 · 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 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 · March 31, 2024

“Strangest Of All…” • (Fortescue)

In his illustrious 1912 tome—The Mass: A Study Of The Roman Liturgy—Father Adrian Fortescue spoke of sequences, writing: “Strangest of all were the vernacular sequences in France and Germany, or those partly vernacular and partly Latin.” Our volunteer choir experimented with that on Holy Thursday, mixing Latin verses with an English refrain. For the record, […]

Jeff Ostrowski · March 25, 2024

William Byrd • “Mass for Five Voices”

Working with volunteers can be discouraging, but always remember there’s light at the end of the tunnel. Yesterday, during PALM SUNDAY MASS, our 100% volunteer choir pulled out the SANCTUS from William Byrd’s “Mass for Five Voices.”  This colossal performance was the result. (They literally didn’t know I was going to have them sing that […]

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.

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 5, 2024

Re: “Sacred Music Symposium” (2024)

Today, an announcement was sent out regarding the 2024 Sacred Music Symposium. If you’re not subscribed to our mailing list, you missed this announcement. I’ve tried everything I can think of to get folks to subscribe to our mailing list. Simply scroll to the bottom of any CCW article and enter your email address. It […]

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.

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    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
    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

Religious worship supplies all our spiritual need, and suits every mood of mind and variety of circumstance.

— John Henry Cardinal Newman

Recent Posts

  • Music List • (2nd Sunday of Lent)
  • PDF Download • “Funerals in the Ordinary Form”
  • Extreme Unction
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  • Which Mass?

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