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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 25, 2023

Good Friday Polyphony by L. Senfl

The editor of the Sacred Music Magazine recently made available to the public this splendid article by our own Charles Weaver. It includes an edition of polyphony for the GOOD FRIDAY “Reproaches.” Renaissance composers often set the various offices of Holy Week; e.g. readers will probably be familiar with the beautiful TENEBRAE setting by Father […]

Jeff Ostrowski · January 21, 2023

Coming Soon! • Symposium 2023

A few weeks ago, dates were announced for Sacred Music Symposium 2023. The rehearsal videos are beginning to appear! For example, the KYRIE ELEYSON contains sections by Lassus, Victoria, and Palestrina. You can see and hear Part 1 at this link. Much more information about this wonderful conference will be released soon!

Jeff Ostrowski · January 21, 2023

“Have We Gone Mainstream?”

A choir member alerted my wife to this video by Scott Hahn. You perhaps recognize a piece that’s been highly promoted by Corpus Christi Watershed: viz. Father Guerrero’s “Sanctus” from Missa Iste Sanctus. I would be interested to learn which choir made the recording (which heavily abbreviates the piece) and whether they used our rehearsal […]

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 […]

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Corpus Christi Watershed

President’s Corner

    PDF Download • Introit (2nd Sn. Ord.)
    This coming Sunday, 18 January 2026, is the 3rd Sunday in Ordinary Time (Year A). The ENTRANCE CHANT is set according to the fourth mode, which sounds ‘serious’ or ‘dark’ or ‘haunting’ or ‘mysterious’—and its English adaptation corresponds to the authentic version (“Omnis terra adóret”) found in the GRADUALE ROMANUM. In this rehearsal video (click here) I attempt to sing the melody while simultaneously accompanying myself on the organ. I encourage you to print off the organ accompaniment (PDF) and play through it, because the harmonies are delightful.
    —Jeff Ostrowski
    Spectacular Communion Setting!
    The FAUXBOURDON setting of the Communion for the Baptism of the Lord (which will occur this coming Sunday) strikes me as quite spectacular. The verses—composed by the fifth century Christian poet, Coelius Sedulius—come from a long alphabetical acrostic and are deservedly famous. The feast of the LORD’S BAPTISM was traditionally the octave day of Epiphany, but in the 1962 kalendar it was made ‘more explicit’ or emphasized. The 1970 MISSALE ROMANUM elevated this feast even further.
    —Jeff Ostrowski
    PDF • “Music List” (Sunday, 11 January)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Feast of the Baptism of the Lord (SUNDAY, 11 January 2025). If such a thing interests you, feel free to download it as a PDF file. The FAUXBOURDON verses for the Communion Antiphon—to say nothing of the antiphon itself—are breathtaking. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the monumental feasts website alongside the official texts in Latin.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —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
    PDF Download • “In Paradisum” in English
    We always sing the IN PARADISUM in Latin, as printed on this PDF score. I have an appallingly bad memory (meaning I’d be a horrible witness in court). In any event, it’s been brought to my attention that 15 years ago I created this organ accompaniment for the famous and beautiful ‘IN PARADISUM’ Gregorian chant sung in English according to ‘MR3’ (Roman Missal, Third Edition). If anyone desires such a thing, feel free to download and print. Looking back, I wish I’d brought the TENOR and BASS voices into a unison (on B-Natural) for the word “welcome” on the second line.
    —Jeff Ostrowski

Random Quote

“No official approbation is required for hymns, songs, and acclamations written for the assembly.”

— Statement by the “Bishops’ Committee on the Liturgy” (10-NOV-1996)

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