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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

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 · January 2, 2025

“Entrance Chant” • Feast of the Epiphany

The authentic Gregorian Chant version begins the same way “Salve, Sancta Parens” begins…

Jeff Ostrowski · January 2, 2025

PDF Download • 129 Pages!

This book—now available as a PDF file—is 129 pages long!

Jeff Ostrowski · January 2, 2025

“Reminder” — Month of January (2025)

Since a new month has arrived, it’s my pleasure to remind you that…

Jeff Ostrowski · January 1, 2025

PDF Download • “What Child Is This” (Harmonized by the Von Trapp Family Singers)

Download this book—129 pages!—free of charge as a PDF: “The Trapp Family Book of Christmas Songs.”

Jeff Ostrowski · December 30, 2024

Accents Do Matter!

The upcoming feast of the Epiphany gives a good example…

Jeff Ostrowski · December 27, 2024

Year’s End Appeal • “Asking for Help”

As 2024 comes to a close, we could really use even a TINY amount of your generous financial support…

Jeff Ostrowski · December 27, 2024

“Music List” • Feast of the Holy Family

Readers have expressed interest in perusing the “music list” I have prepared for the Feast of the Holy Family.

Jeff Ostrowski · December 26, 2024

Bizarre Statements From “Leaflet Missal” Founder

Imagine blaming the rise of Adolf Hitler on the Church’s immemorial use of a ‘lingua sacra’ during Mass!

Jeff Ostrowski · December 25, 2024

PDF Download • From Cambridge: “Saint John Fisher Responsorial Psalms Collection” (253 Pages)

This 2024 collection incorporates responsorial psalms by many composers, particularly Catholic composers associated with Cambridge University.

Jeff Ostrowski · December 25, 2024

“Music List” • Midnight Mass (Christmas)

Readers have expressed interest in perusing the “music list” we used at our Christmas Midnight Mass.

Jeff Ostrowski · December 24, 2024

“Silent Night” • Easy Organ Arrangement

Choirs will ‘pick up’ this piece up with minimal rehearsal time.

Jeff Ostrowski · December 23, 2024

PDF Download • “Chart For Each Mode”

If you notice any errors, please let me know!

Jeff Ostrowski · December 22, 2024

Year’s End Appeal • “Asking for Help”

As 2024 comes to a close, we could really use even a TINY amount of your generous financial support…

Jeff Ostrowski · December 20, 2024

“Source and Summit” • What Is That?

Notice how Dom Franquesa (without explanation) stealthily annihilates sacrifice, sin, and the adoration we owe God.

Jeff Ostrowski · December 20, 2024

Rorate Caeli + ICEL + Dynamic Equivalence

There’s an old adage: “Once stung, twice shy.”

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Corpus Christi Watershed

President’s Corner

    PDF • “Music List” (Xmas Midnight Mass)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Christmas Midnight Mass (“Ad Missam In Nocte”). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is simple, but quite beautiful. 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 • “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

Quick Thoughts

    What does this mean? “Pre-Urbanite”
    One of the things informed critics have frequently praised vis-à-vis the Saint Jean de Brébeuf Hymnal has to do with its careful treatment of the ancient hymns vs. the “Urbanite” hymns. This topic I had believed to be fairly well understood—but I was wrong. The reason I thought people knew about it is simple; in the EDITIO VATICANA 1908 Graduale Romanum (as well as the 1913 Liber Antiphonarius) both versions are provided, right next to each other. You can see what I mean by examining this PDF file from the Roman Gradual of 1908. Most people still don’t understand that the Urbanite versions were never adopted by any priests or monks who sang the Divine Office each day. Switching would have required a massive amount of effort and money, because all the books would need to be changed.
    —Jeff Ostrowski
    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

Random Quote

If it is the explicit will of the Council that the faithful are to be able to sing the “Gloria” or the “Credo” together in Latin [which it is] then indirectly there is being expressed here the obligation of regularly celebrating Mass with Latin Gregorian chant. And not merely occasionally, but with such frequency and constancy as to make the singing of these Latin texts a genuine possession of the faithful.

— Heinrich Flatten, Apostolic Protonotary & Canon Law Professor (Bonn)

Recent Posts

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  • PDF • “Music List” (Xmas Midnight Mass)
  • What does this mean? “Pre-Urbanite”
  • “He never had a single day of conflict with anyone.”
  • PDF • “Standard Gregorian Chants for Schools, Churches, Seminaries, & Convents” (1946) —123 pages

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