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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 · December 20, 2016

Shortest “Kyrie” Palestrina Ever Wrote

Especially suited for the Ordinary Form—and did you spot the invertible counterpoint?

Jeff Ostrowski · December 14, 2016

Musical Resources • Christmas Midnight Mass (EF)

We won’t be singing “Rudolph the Red-Nosed Reindeer” for Offertory!

Jeff Ostrowski · December 14, 2016

Musical Resources • 4th Sunday of Advent (EF)

“Look with favor, we beseech Thee, O Lord upon these offerings here before Thee…”

Jeff Ostrowski · December 12, 2016

Bauer Family Sings “O Magnum Mysterium”

…Victoria lives, thanks to fine youngsters such as these!

Jeff Ostrowski · December 10, 2016

PDF Download • “Rorate Mass” Booklet

Including a video snippet taken in Los Angeles.

Jeff Ostrowski · December 9, 2016

Help! Why does my printer leave off the clivis?

When I print this entire booklet, the Communion inexplicably erases every clivis in the psalmody.

Jeff Ostrowski · December 9, 2016

Musical Resources • 3rd Sunday of Advent (EF)

“Rejoice in the Lord always; again I say, rejoice.”

Jeff Ostrowski · December 8, 2016

PDF Download • Immac. Conception Music Booklet

Make sure to read the translation of the Offertory Hymn—so gorgeous!

Jeff Ostrowski · December 8, 2016

And Now … Some Fantastic News!

Good people really do exist.

Jeff Ostrowski · December 6, 2016

“Ad Orientem” • Archbishop Naumann’s Letter

“…there are, in the core of the Church’s sacramental teaching and experience, good contentions and corollary arguments to be made for both practices.” —Archbishop Naumann

Jeff Ostrowski · December 5, 2016

Bishop of Manchester • Letter Re: “Ad Orientem”

A $12,000 reward will be given to anyone who can produce a Vatican II document mentioning “celebration facing the people.”

Jeff Ostrowski · December 5, 2016

Lay Faithful Have Begun A Facebook Page

…for the new FSSP Apostolate in Los Angeles.

Jeff Ostrowski · December 2, 2016

Does Your Choir Sing Perfectly?

Why do we avoid telling the ones we love how we feel about them?

Jeff Ostrowski · December 1, 2016

Musical Resources • 2nd Sunday of Advent (EF)

“Be appeased, we beseech Thee, O Lord, by the prayers and offerings of our lowliness…”

Jeff Ostrowski · November 30, 2016

“Benedictus” • Palestrina Uses The “Dragnet” Theme!

Our Church is notoriously horrible at keeping up with cultural fads—because they’re so ephemeral.

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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

After sixty years as teacher, composer, and organist, I may state that the Gregorian Chant should be part of the basic material of any musical education, be it religious or secular. The study of it enormously enlarges the spiritual background of any musician. Whereas students in literature will always be required to study Dante, Petrarch and Chaucer, why neglect Gregorian in music education?

— Flor Peeters

Recent Posts

  • Should Catholics Sing Protestant Christmas Carols?
  • 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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