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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

Articles

Richard J. Clark · January 10, 2020

Chant, Mighty Pipe Organs • Two Sundays, Two Cathedrals

Gregorian Chant and mighty pipe organs will be front and center at two concerts: Boston’s Cathedral of the Holy Cross and Saint Patrick’s Cathedral, New York City.

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Jeff Ostrowski · January 7, 2020

JMO Copy (inviolable) St. Jean de Lalande Library of Rare Books

JMO Copy (inviolable) St. Jean de Lalande Library of Rare Books “The judicious searcher in this remarkable online collection will certainly reap great rewards for his effort.” — Fr. Robert A. Skeris, Benjamin T. Rome School of Music (CUA) HE SAINT Jean de Lalande Library is derived primarily from Jeff Ostrowski’s personal collection of rare […]

Veronica Moreno · January 1, 2020

Protected: Watershed in 2020

There is no excerpt because this is a protected post.

Veronica Moreno · December 31, 2019

Watershed in 2019

Article Categories Liturgical Choices Catholic Beauty Music Life Music Brébeuf Hymnal Music Pieces Liturgical Choices “Church Music Manifesto” (2019) — Mass should be a peaceful experience for the congregation, not an opportunity to be harassed. Where do we go from here? — We need to break away from simply providing music for the next Sunday’s […]

Jeff Ostrowski · December 31, 2019

Hymn • “A Solis Ortus Cardine” (In English)

The Church’s greatest hymn? Many believe it’s this one.

Jeff Ostrowski · December 30, 2019

PDF Accompaniment • “Jesu Redemptor Omnium”

You can compare my accompaniment to that of Achille P. Bragers.

Jeff Ostrowski · December 24, 2019

Video • “Hark! The Herald Angels Sing”

Older Catholic hymnals did funny things with this melody.

Richard J. Clark · December 20, 2019

Announcement of Easter & the Movable Feasts • 2020

Free download of The Announcement of Easter and the Moveable Feasts for 2020

Jeff Ostrowski · December 17, 2019

“Agincourt” • Do You Know This Hymn?

I insisted that my interpretation was correct. Then she made a comment that haunts me still.

Jeff Ostrowski · December 16, 2019

Fr. Peter Gee • My First Chant Teacher

Is it just me, or does England have extremely beautiful churches?

Fr. David Friel · December 16, 2019

Liturgica • Interview with Chris Mueller on the Release of New CD

Mueller discusses his recently released recording of original compositions and Renaissance masterworks.

Jeff Ostrowski · December 12, 2019

Fantastic! • “Somber Yet Powerful” Advent Hymn

It’s impossible to incorporate all the awesome Advent hymns; the season is too short.

Jeff Ostrowski · December 10, 2019

PDF • “Veni Veni Emmanuel” (2 Voices + Organ)

Download this PDF score—free to all—and sing during Advent!

Veronica Moreno · December 4, 2019

Four Steps • “Homeschoolers, learn an Advent hymn!”

As we navigate through this season, the secular world bombards us with decorated Christmas trees, “holiday music” on every station, and house after house drenched in festive lights…

Jeff Ostrowski · December 1, 2019

(Archive) • St. Edmund Campion Missal & Hymnal (2nd Edition)

Foreword by Fr. Berg   —   Nine Images   —   2nd Edition Info Table of Contents   —   Executive Summary ORGAN ACCOMPANIMENTS (2 vols.)   —   “How do I open this book properly?” (VIDEOS) INE ART: More than 300 traditional line art illustrations were collected from a special Benedictine archive and […]

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Corpus Christi Watershed

President’s Corner

    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    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

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

It’s good that you are in the USA, otherwise who is going to—in the best sense—make music?

— Ignaz Friedman writing to Josef Hofmann (4 January 1940)

Recent Posts

  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)
  • Gorgeous Image of Monks Singing!
  • “Let the Choir Have a Voice” • Jeff Ostrowski’s Essay on Choral Music in the Catholic Mass

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