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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

Chaumonot Composers Group

Jeff Ostrowski · October 18, 2025

Fulton J. Sheen + this Sunday’s “Entrance Chant”

Gregorian melodies ‘stick’ in one’s memory in a way that’s both marvelous and surprising.

Jeff Ostrowski · September 26, 2025

PDF Download • Communion (26th Sn. Ord.)

This Communion antiphon sparkles with beauty.

Jeff Ostrowski · September 5, 2025

“Entrance Chant” • 23rd (Ordinary Time)

The Communion Chant includes gorgeous verses in fauxbourdon.

Jeff Ostrowski · August 11, 2025

“Entrance Chant” • 21st Sunday Ordin. Time

This “Entrance Chant” is used during liturgical years A, B, and C.

Jeff Ostrowski · May 6, 2025

Beginning a Men’s Schola

I feel like we have a great start…

Jeff Ostrowski · May 2, 2025

Communion (3rd Sunday of Easter)

This piece is sung by either all men or all women.

Jeff Ostrowski · April 15, 2025

PDF Download • Exceedingly Rare! — “The Torn Tunic” (122 pages) … published in 1967

Is Tito Casini correct that vernacular plainsong is a “sin against nature?”

Jeff Ostrowski · April 11, 2025

PDF Download • “Communion” (Holy Thursday)

Its verses are quite beautiful.

Jeff Ostrowski · April 9, 2025

PDF Download • “Offertory” (Palm Sunday)

Some believe that “joyful” texts sound happy in Gregorian Chant and “sad” texts sound mournful.

Jeff Ostrowski · January 24, 2025

Only Every Three Years…

Communion antiphon for the 3rd Sunday in Ordinary Time (Year C).

Jeff Ostrowski · January 3, 2025

PDF Download • “Communion Chant” (Epiphany)

Fully harmonized, including fabulous (optional) verses from the New Testament.

Jeff Ostrowski · December 19, 2024

“Entrance Chant” • 4th Sunday of Advent

Like so many Advent antiphons, this one is in the first mode and comes from the prophet Isaiah.

Jeff Ostrowski · December 8, 2024

“Entrance Chant” • 3rd Sunday of Advent

This Introit is in the first mode.

Jeff Ostrowski · November 19, 2024

“Entrance Chant” • Christ the King

The feast of Christ the King—a completely modern feast—was added in 1925.

Jeff Ostrowski · November 12, 2024

“Entrance Chant” • Sunday (17 Nov. 2024)

This Introit is in the sixth mode (known as the “peaceful” mode).

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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

“No living writer possesses a greater command over the English language than Msgr. Knox, but in this instance one cannot help feeling that he has allowed his virtuosity to get the better of him, and, in his anxiety to shield the holy of holies from vulgar intrusion, produced a text that would either pass over the listener’s head as completely as the original Latin, or else leave him groping so long after the meaning that he would be quite unable to keep pace with the officiating priest.”

— Dr. Herbert Patrick Reginald Finberg (University of Leicester)

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