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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 · September 20, 2017

PDF Download • “Missal for the Laity” (1846)

Have you noticed liturgical progressives are never happy?

Jeff Ostrowski · September 20, 2017

16th Sunday after Pentecost (4th in September)

“Let Thy grace, we beseech Thee, O Lord, ever go before us…”

Jeff Ostrowski · September 19, 2017

PDF Download • “Lauda Sion” Hymnal (1886)

Hymns to the Blessed Virgin, Hymns for Benediction, Offertories, etc.

Jeff Ostrowski · September 15, 2017

“O Sanctissima” • SATB Contemporary Setting!

I bet you haven’t heard this arrangement!

Jeff Ostrowski · September 14, 2017

15th Sunday after Pentecost (3rd in September)

…and they glorified God, saying, “A great prophet is risen up amongst us and God hath visited His people.”

Jeff Ostrowski · September 13, 2017

Does Watershed Make A Difference?

“A huge success! My pastor was blown away at the beauty of the Mass setting by Guerrero. The people in attendance were just floored…”

Jeff Ostrowski · September 7, 2017

14th Sunday after Pentecost (2nd in September)

“Grant us, we beseech Thee, O Lord, that this saving Victim may become both the cleansing of our sins, and the propitiation of Thy might.”

Jeff Ostrowski · August 31, 2017

13th Sunday after Pentecost (1st in September)

“Having received Thy heavenly sacraments, O Lord, we beseech Thee that we may profit unto the increase of everlasting salvation…”

Jeff Ostrowski · August 30, 2017

Thoughts That Enter A Choirmaster’s Mind

A word about depression and discouragement.

Jeff Ostrowski · August 25, 2017

Very Great Mischiefs Which Arise From The Use Of Polyphony By Religious Orders (1610)

Fourth: musicians who beguile their way into religious orders are for the most part silly, idle, vacillating, vain, effeminate, and even vicious individuals.

Jeff Ostrowski · August 24, 2017

Musical Resources • 12th Sunday after Pentecost

“…and it chanced that a certain priest went down the same way, and seeing him, passed by.”

Jeff Ostrowski · August 22, 2017

Volunteer Choirs • Rehearsal “Tricks”

Only two people in the whole school are forced to publicly demonstrate their work: the choirmaster and the coach.

Jeff Ostrowski · August 18, 2017

Musical Resources • 11th Sunday after Pentecost 1

“After that He was seen by James, then by all the apostles.”

Jeff Ostrowski · August 18, 2017

PDF Download • “O Esca Viatorum”

I am deeply saddened that some people still don’t know where these items are located.

Jeff Ostrowski · August 14, 2017

Ordo Missæ from “People’s Mass Book” (1964)

Two words come to mind: inexplicable and bizarre.

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Corpus Christi Watershed

President’s Corner

    PDF • “Music List” (Sunday, 28 December)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for Feast of the Holy Family of Jesus, Mary, & Joseph (28 Dec. 2025). If such a thing interests you, feel free to download it as a PDF file. The FAUXBOURDON verses for the Communion Antiphon are particularly gorgeous. 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” (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

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

“The scholar who lives only for his subject is but the fragment of a man; he lives in a shadow-world, mistaking means for ends.”

— Msgr. Ronald Knox (1888-1957)

Recent Posts

  • PDF • “Music List” (Sunday, 28 December)
  • 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.”

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