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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

PDF Download

Jeff Ostrowski · September 26, 2023

PDF Download • All Seven (7) Movements: “Mass in Honor of Saint Noël Chabanel”

My Mass setting for the Ordinary Form involves your Congregation, your Cantrix, and your Choir.

Dr. Alfred Calabrese · September 23, 2023

PDF Download • “Kyrie for the Ordinary Form in Honor of Saint Thomas More”

A month of William Byrd … in Dallas, Texas!

Jeff Ostrowski · September 20, 2023

PDF Download • “Glory To God” for Congregation & Choir (Mass of Saint Noël Chabanel)

My setting begins with the entire congregation singing—but the middle section is SATB polyphony.

Jeff Ostrowski · September 19, 2023

(Quiz) • “How Well Do You Know Your Hymns?”

Including a tip on preventing choirs from ‘sinking’ the pitch lower and lower.

Jeff Ostrowski · September 13, 2023

Eucharistic Hymn by the Archbishop of Canterbury

Using a favorite melody of Dr. Theodore Marier.

Jeff Ostrowski · August 30, 2023

“Momentous Release!” • Freakishly Rare Gradual & Vesperal Published by Pothier’s Protégé (1,638 pages!)

He screamed into the telephone: “There’s no such thing as Gregorian Chant!”

Jeff Ostrowski · August 29, 2023

PDF Download • “Alleluia Verse before Gospel” • (Mass in honor of Saint Noël Chabanel)

Instead, Saint Francis knelt down and kissed the priest’s hands…

Jeff Ostrowski · August 23, 2023

PDF Download • Saint Noël Chabanel Mass Setting (“Kýrie Eléison”) for the Ordinary Form

We must remember the lesson of the rock.

Jeff Ostrowski · August 22, 2023

PDF Download • “Our Father” (SATB Version)

Today, I release another movement of the “Saint Noël Chabanel Mass Setting” (for use in the Ordinary Form).

Jeff Ostrowski · August 18, 2023

PDF Download • Saint Noël Chabanel Mass Setting (“Holy, Holy, Holy”) for the Ordinary Form

As if the canonic sections were insufficiently stupendous, the composer works in stepwise ascending lines juxtaposed with lines in augmentation.

Jeff Ostrowski · August 17, 2023

“OCP” (Oregon Catholic Press) Forbids Organ Improvisation! • Screenshot Provided

The hubris on the part of OCP is breathtaking.

Jeff Ostrowski · August 14, 2023

“Did One Man Single-Handedly Sabotage the Gregorian Restoration?” • (Part 1 of 2)

Including a scanned copy of a rare “Graduale” (Pustet, 1911) released a few minutes ago—for the first time in history!

Jeff Ostrowski · August 11, 2023

PDF Download • Saint Noël Chabanel Mass Setting (“Lamb of God”) for the Ordinary Form

Today, we release the congregational “Lamb of God” with SATB polyphonic extension.

Dr. Charles Weaver · August 9, 2023

PDF Download • Palestrina’s Most Famous Mass Simplified

“I find Anerio’s work here to be excellent, and I hope you do as well.” —Dr. Charles Weaver

Matthew Frederes · August 8, 2023

“Graduale Romanum” • Rare Edition from 1661 A. D.

Today we release an exceedingly rare 1661 edition of the Graduale Romanum, in high resolution and in full color!

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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

It is clear the Church is facing a grave crisis. Under the name of “the new Church” and “the post-conciliar Church,” a different Church from that of Jesus Christ is now trying to establish itself: an anthropocentric society threatened with imminent apostasy which is allowing itself to be swept along in a movement of general abdication under the pretext of renewal, ecumenicism, or adaptation.

— Cardinal Henri de Lubac (29 August 1967)

Recent Posts

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

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