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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 · May 2, 2019

PDF Download • Complete Kyriale on Modern Staves!

If you can read treble clef, you can read this edition … a brilliant idea!

Jeff Ostrowski · April 20, 2019

PDF Download • “Cheat Sheet” for Easter Vigil

Releasing this is probably a bad idea…too late!

Jeff Ostrowski · April 19, 2019

PDF Download • Organ Interludes for Manuals!

I will most definitely be playing these pieces—based on hymn tunes—by Georg Philipp Telemann!

Jeff Ostrowski · April 8, 2019

PDF Download • Spectacular “Tenebrae” Booklet

Mr. Albert Bloomfield has done us a breathtaking favor.

Jeff Ostrowski · April 4, 2019

PDF Download • Mystery Kyriale (100 Pages)

Nobody knows the author or date of publication.

Jeff Ostrowski · January 22, 2019

PDF Download • “Chant Service Book” (208 pages)

An extremely rare book from 1941, containing all your favorite Gregorian chants!

Jeff Ostrowski · December 22, 2018

PDF Booklet • Christmas Midnight Mass (36 pages)

It looks so simple when placed in a booklet like that…

Veronica Brandt · December 1, 2018

PDF Download • “Easy Organ Interludes” (229 pages)

Giovanni Battista Fasolo published an enormous book of organ interludes without pedals • Pierre Gouin typed them up, bringing you this clear window into renaissance liturgical music for free! • Enjoy this treasure trove of organ music from almost 400 years ago! Plus a few highlights from along the way+

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Jeff Ostrowski · November 15, 2018

PDF Download • Mass Hymns by Fr. Seed, SJ (1906)

How utterly strange to see such items!

Jeff Ostrowski · November 6, 2018

PDF Download • “Pope Pius XII Hymnal” (1959)

Very few people have a copy of this incredibly rare Catholic hymnal.

Jeff Ostrowski · October 30, 2018

“Source Material” • The Saint Jean de Brébeuf Hymnal

We assembled a staggering number of Catholic hymnals and selected only the very best material from each.

Jeff Ostrowski · October 15, 2018

PDF Download • “Sanctus” (SATB) by JS Bach!

Wow … I bet you’ve never heard this piece before!

Jeff Ostrowski · October 2, 2018

PDF Download • SATB Christmas Carol by Peter Lejeune • “Jam Désinant Suspíria”

I recorded all the voices, to demonstrate how it sounds…

Jeff Ostrowski · August 13, 2018

PDF Download • “Leeds Catholic Hymnal” (232 pages)

A hymnal out of print for fifty years has been scanned by Mr. Colin E. Jackson!

Jeff Ostrowski · August 7, 2018

PDF Download • “Sunday Vespers”

…including a failed descant from 1983.

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Corpus Christi Watershed

President’s Corner

    PDF • “Music List” (4th Sunday of Advent)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for 21 December 2025, which is the 4th Sunday of Advent (Year A). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is the famous “Roráte Coeli” and the fauxbourdon setting of the COMMUNION is exquisite. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    PDF • Our Lady of Guadalupe (12 Dec.)
    The Responsorial Psalm may be downloaded as a PDF file (organist & vocalist) for 12 December, which is the Feast of Our Lady of Guadalupe. When it comes to the formulary for this Mass, it’s astounding how infrequently it’s included in official books. Prior to Vatican II, one had to search through “supplemental material” printed in the back of hand-missals and graduals. But since 1970, the feast is virtually nonexistent. According to the UNIVERSAL KALENDAR, 12 December is the “Feast of Saint Jane Frances De Chantal, Religious” (Die 12 decembris: S. Ioannæ Franciscæ de Chantal, religiosæ). Why should that feast overpower Our Lady of Guadalupe? In the United States, OLG is celebrated—and I’d assume in Mexico, Central America, South America, and Canada—but, as I said, the Propria Missae are virtually impossible to locate. I possess only three books which mention this feast.
    —Jeff Ostrowski
    Simplified Accompaniment (Advent Hymn)
    Many organists are forced to simultaneously serve as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult. I invite you to download this simplified organ accompaniment (PDF) which in the Father Brébeuf Hymnal is hymn #661: “Come, Thou Long-Expected Jesus” (for ADVENT). I’m toying with the idea of creating a whole bunch of these, to help amateur organists. The last one I uploaded was downloaded more than 2,900 times in a matter of hours—so there appears to be interest.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Santo Santo Santo”
    Those searching for a dignified, brief, simple, bright setting of SANCTUS in Spanish (“Santo Santo Santo”) are invited to download this Setting in honor of Saint John Brébeuf (organist & vocalist). I wonder if there would be any interest in me recording a rehearsal video for this piece.
    —Jeff Ostrowski
    Pope Leo XIV on Sacred Music
    On 5 December 2025, Pope Leo XIV made this declaration with regard to liturgical music.
    —Corpus Christi Watershed
    “Translations Approved for Liturgical Use”
    According to the newsletter for USSCB’s Committee on Divine Worship dated September 1996, there are three (3) translations of the Bible which can be used in the sacred liturgy in the United States. You can read this information with your own eyes. It seems the USCCB and also Rome fully approved the so-called NRSV (“New Revised Standard Version”) on 13 November 1991 and 6 April 1992 but this permission was then withdrawn in 1994.
    —Corpus Christi Watershed

Random Quote

“What really matters in life is that we are loved by Christ and that we love Him in return. In comparison to the love of Jesus, everything else is secondary. And, without the love of Jesus, everything is useless.”

— Pope John Paul II (1979)

Recent Posts

  • PDF • “Standard Gregorian Chants for Schools, Churches, Seminaries, & Convents” (1946) —123 pages
  • The “Word of the Father” Chord: Theology and Harmony Meet at Christmas
  • PDF • “Music List” (4th Sunday of Advent)
  • PDF Download • “Santo Santo Santo”
  • Crucial Tips • “Teaching Children How to Sing”

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