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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 · January 16, 2023

Desperate! • Needing help after robbery

A few years ago, I had valuable books stolen. Recovery efforts with law enforcement have failed, so I’m reaching out to our readers. Can somebody help me obtain VOLUME II and VOLUME VIII of the Nova organi harmonia published in the 1940s and 1950s by the LEMMENSINSTITUUT? As far as I can tell, these volumes can’t […]

Jeff Ostrowski · January 3, 2023

FEEDBACK … from New Hampshire

Jeff, thanks for the rare Gregorian accompaniments. I just love all the work you do! About 2 years ago, my parish made the decision to ditch all the contemporary Mass settings (Marty Haugen, and so forth) and to only use the Latin! We currently use the [name redacted of a disposable missal] … some of their accompaniments […]

Jeff Ostrowski · January 2, 2023

2 January 2023 • FEEDBACK

Dear Mr. Ostrowski; I must politely disagree with your friend who said “absolutely nobody cares” about the rare books you share on the blog. The fact is, your raw enthusiasm for these resources teaches me (and presumably others) to care. I admit that sometimes the angles from which you present them—the amount of context, or […]

Jeff Ostrowski · December 24, 2022

PDF • “Silent Night” Harmonization

Here’s a handy organ accompaniment (PDF) in three different key signatures: MIDDLE, HIGH, and LOW. The Latin lyrics (“Silens Nox”) are courtesy of Father Valentine Young, OFM (d. 2020). The organ harmonies are very simple, yet beautiful. Those who desire such a thing may also download a Singer’s Version. For obvious reasons, the choir will […]

Jeff Ostrowski · December 23, 2022

23 December 2022 • FEEDBACK

A very skilled conductor from another country—who recently posted a recording any conductor would be proud of, displaying a light, pleasant, and professional choral sound—wrote to us on 23 December 2022: “CCWatershed and the Sacred Music Symposia have made a great mark in my musical career and the sound you hear you can proudly say […]

Jeff Ostrowski · December 20, 2022

19 Dec. 2022 • “Include The Congregation?”

People often ask: “Can Gregorian Chant include the congregation?” The answer is: Yes! Listen to this Live Recording from last Sunday (which was the 4th Sunday of Advent). That is one model—not the only model—demonstrating how a congregation could be included. It’s KYRIE XVII, traditionally sung during Advent.

Jeff Ostrowski · December 20, 2022

“Can You Help?” • (Not asking for $ $ $ )

You can help us by adding yourself to our mailing list. It takes less than 5 seconds: (1) Scroll to the bottom of ANY blog article; (2) Enter your email address. It’s that simple. We’re a tiny 501(c)3 public charity. We exist solely by the generosity of small donors. We have no endowment; we have no […]

Jeff Ostrowski · December 20, 2022

19 Dec. 2022 • “This One Has It All”

In case you missed it, this December 10th article about Dr. Peter Wagner, who founded the GREGORIAN ACADEMY at Fribourg (Switzerland), has it all: (1) A rare download [138 pages] of Dr. Wagner’s Kyriale Accompaniment Book; (2) Biographical information about Dr. Wagner; (3) A special surprise you’ll love; (4) Courtesy of Professor Weaver, a translation […]

Jeff Ostrowski · December 17, 2022

Available Now! • 4th Sunday of Advent

Those who so desire may now download this organ accompaniment booklet (25 pages) for the 4th Sunday of Advent, including the “O ANTIPHON” for 18 December 2022.

Jeff Ostrowski · December 8, 2022

“Advent Kyrie” • Plainsong w/ Organ

Those who so desire may now download a live recording of my choir—which consists of 100% volunteer singers—singing the “Advent Kyrie” (KYRIE XVII) last Sunday.

Jeff Ostrowski · December 5, 2022

“Urbanite Hymns” • What are those?

Dr. Aaron James, who earned a double doctorate, has stated publicly that the Saint Jean de Brébeuf Hymnal does a wonderful job explaining—by means of gorgeous color plates—the difference between the “Pre-Urbanite” hymns and those which were modified by Pope Urban VIII (d. 1644). Dr. James calls the Brébeuf treatment of the urbanite reform “a […]

Jeff Ostrowski · December 3, 2022

“Do this immediately!” • (Dec. 2022)

December is here! That means I must issue a monthly reminder to all: please subscribe to our free mailing list! It couldn’t be easier: (a) Go to any article; (b) Scroll to the bottom; (c) Enter your email address. We exist solely by the generosity of small donors. We have no endowment; we have no major […]

Jeff Ostrowski · November 28, 2022

28 November 2022 • FEEDBACK

“I can’t thank you enough for that four-part download of the Graduale with 5 lines. That is absolutely brilliant! Since I and another guy from the choir chant the Traditional Propers every Sunday, it has proven to be an invaluable resource. Great job of scanning it, too.” —Email received this morning from S.M.D.

Jeff Ostrowski · November 27, 2022

PDF Download • “1st Sunday of Advent”

Those who accompany VESPERS FOR THE FIRST SUNDAY OF ADVENT may wish to download this draft copy. It’s the organ accompaniment I use, since my parish has Vespers (in the Extraordinary Form) with our congregation each Sunday afternoon. It looks pretty ‘junky’ but it gets the job done. Someday I hope to make a much […]

Jeff Ostrowski · November 26, 2022

“Trochee Trouble” • Say What?

We have posted many articles discussing the French Vs. German way of interpreting syllabic plainsong—which some refer to as “Trochee Trouble.” Needless to say, we encourage everyone to carefully read all those articles. But some folks still don’t understand what “Trochee Trouble” is all about. Therefore, I have created this 1-Page Sheet that explains it […]

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Corpus Christi Watershed

President’s Corner

    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
    Funeral Music “Template” • For Families
    Many have requested the MUSICAL TEMPLATE for funerals we give to families at our parish. The family of the deceased is usually involved in selecting Number 12 on that sheet. This template was difficult to assemble, because the “Ordo Exsequiarum” has never been translated into English, and the assigned chants and hymns are given in different liturgical books (Lectionary, Gradual, Order of Christian Funerals, and so on). Please notify me if you spot errors or broken links. Readers will be particularly interested in some of the plainsong musical settings, which are truly haunting in their beauty.
    —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

“For the Pharisees, and all the Jews, except they wash their hands, eat not, holding the tradition of the elders”—is that English idiom? “For the Nazis, and all the Germans, except they say Heil Hitler! meet not in the street, holding their lives valuable”—is that English idiom?

— Monsignor Ronald Knox

Recent Posts

  • Music List • (5th Sund. Ordinary Time)
  • PDF • “Communion” (5th Sunday in Ordin.)
  • “Pipe Organ Interlude During Funerals?” • (Reader Feedback)
  • Funeral Music “Template” • For Families
  • “To Cover Sin With Smooth Names”

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