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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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · November 1, 2022

“Gregorian Chant Rhythm Wars” • Ostrowski Vs. Williams

My colleague, Patrick Williams has agreed to enter into a “colloquy” with me vis-à-vis Gregorian rhythm.

Follow the Discussion on Facebook

Jeff Ostrowski · October 29, 2022

“Christ the King” • Introit

I have attempted to record the Introit for the Feast of Christ the King according to the official rhythm of the Catholic Church. You can view the YouTube recording of my attempt. Traditionally, our Savior’s “kingship” was celebrated as part of the Epiphany—but in 1925, Pope Pius XI created the “feast of Christ the King” […]

Jeff Ostrowski · October 29, 2022

29 October 2022 • FEEDBACK

Good morning! My name is […] and I write to you from Chile. Just a short note to say: thank you for your wonderful website “Corpus Christi Watershed.” As a Catholic organist, I truly appreciate the marvelous work you have done. Your website is a tremendous library open to everyone. Thanks so much, and God […]

Jeff Ostrowski · October 28, 2022

“To Jesus Christ, Our Sovereign King” • Melody Comes From Where?

Nobody seems capable of answering this question.

Jeff Ostrowski · October 22, 2022

“Vespers of the Dead” • Most Elaborate Book of Hours I’ve Ever Seen

Our Lord said that if men withheld their praise of Him, “the very stones would cry out…”

Jeff Ostrowski · October 19, 2022

PDF Download • Plainchant on 5 lines!

I can’t think of better way to learn Gregorian chant than to download this 651-page PDF file, containing the marvelous Gregorian Vesperale (1915) by Father Karl Weinmann (d. 1929) printed on five lines. If you accompany Vespers directly from the plainsong notation, this makes life easy! It’s also fun to compare the Gregorian chant inside […]

Jeff Ostrowski · October 19, 2022

19 October 2022 • Feast of Saint Isaac Jogues & Companions

In Canada, they list Father Brébeuf first—in the United States, Father Jogues.

Jeff Ostrowski · October 19, 2022

PDF Download • “Hymn List For Sundays” (until 8 December 2022)

As a child, Rex Harrison contracted measles, which took away the sight from his left eye for the rest of his life.

Jeff Ostrowski · October 17, 2022

“Hymn By A Saint” • For All Saints (November 1st)

There’s something truly ‘haunting’ about this melody by Flor Peeters—and once it’s in your head, it’s hard to banish!

Jeff Ostrowski · October 15, 2022

USCCB • “Principal Music Books for the Eucharist”

The principal books of music for the Eucharist were recently (re-)confirmed by the United States Conference of Catholic Bishops.

Jeff Ostrowski · October 15, 2022

This Sunday’s Introit • “Official” Rhythm

Our Schola Cantorum members prefer to hear recordings of chants we’re learning. This morning I attempted this recording of the INTROIT for this coming Sunday, which is the 19th Sunday after Pentecost. My voice was groggy, but I suppose we singers can’t expect to have a recording studio follow us around all day waiting for […]

Jeff Ostrowski · October 13, 2022

PDF Download • “Liber Cantualis”

On 22 November 1963, Pope Paul VI established the “Consociatio Internationalis Musicae Sacrae.” On 16 July 1966, the Vatican reiterated that the Consociatio was “the only international association of sacred music approved by the Holy See.” It’s very difficult—at least for me—to figure out what happened to that organization, and whether it still exists. One […]

Jeff Ostrowski · October 13, 2022

PDF Download • “Salve Regina” Chant in English (Four Different Versions)

I never knew these existed until earlier today!

Jeff Ostrowski · October 11, 2022

PDF Download • 1915 “Gregorian Vesperale” … Printed On Five Lines! (651 Pages)

Father Weinmann placed plainsong on five (5) lines, yet still used Gregorian notation—including chord symbols!

Jeff Ostrowski · October 11, 2022

Feedback • “Not Happy With Your Article”

“My name is *******. I wanted to share with you my thoughts on your recent blog post. I was very displeased with this article. […] I’ve have been a supporter of the Latin Mass since I was 14 years old. I’m now 26 and a seminarian; and I very much hope (in the near future) […]

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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

“Leave the Mass alone. Our churches are full—the Protestants, in spite of their vernacular, far otherwise.”

— Cardinal Godfrey (one of the Vatican II fathers)

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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