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Corpus Christi Watershed

We’re a 501(c)3 public charity established in 2006. We have no endowment, no major donors, no savings, and run no advertisements. We exist solely by the generosity of small donors.

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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 · August 16, 2020

3 September 1958 • Issued by Pius XII

The Sacred Congregation for Rites issued De musica sacra et sacra liturgia (“Instruction on Sacred Music and Sacred Liturgy”) on 3 September 1958. An excerpt: Finally, perfect active participation is achieved when there is also sacramental participation, by which “the faithful who are present communicate not only with spiritual affection, but also in reception of […]

Jeff Ostrowski · August 14, 2020

“Homily — 20th Sunday in Ordinary Time, Year A” • Father Valentine Young, OFM

“I had a brother who was married outside the Church and had stopped going to Church for about thirty years…”

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Jeff Ostrowski · August 14, 2020

13 August 2020 • “Lenten acclamations”

Where do the Latin acclamations come from, which replace the “Alleluia” during Lent? The traditional Divine Office replaces Alleluia with “Laus tibi Domine Rex aeternae gloriae.” Here’s a piece of paper that has all possible Ordinary Form “Lenten acclamations” in Latin.

Jeff Ostrowski · August 13, 2020

“Crown Him with Many Crowns” (Diademata) • Brébeuf Hymnal #752

Big news! They discovered why Franz Schubert’s “Unfinished Symphony” was never completed!

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Jeff Ostrowski · August 12, 2020

These kids are on fire! • “Victimæ Paschali Laudes” by Philippe Verdelot

I don’t know a more beautiful, gorgeous, memorable 15 seconds than the beginning of Part 2—stunning!

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Jeff Ostrowski · August 10, 2020

10 August 2020 • FEEDBACK

A reader wrote to us: “I just wanted to send you a message and let you know I REALLY like the compositions on your website. You have a very rich harmonic language in your choral writing. The work you do is so appreciated and important!”

Jeff Ostrowski · August 9, 2020

PDF Download • “Veni Creator Spiritus” Organ Accompaniment (Each Verse Notated)

Accompaniment to the hymn “Veni Creator Spiritus” with all the verses written out (composed by Jeff Ostrowski).

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Jeff Ostrowski · August 7, 2020

Vexing? Irksome? • Thoughts On Hymnal Indexes

Most people comb desperately through the final pages, seeking the correct section…

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Jeff Ostrowski · August 6, 2020

Allowed or Forbidden? • Parallel Fourths in Renaissance Polyphony

Article Subtitle: “Brave schola director posts live recording from rehearsal.”

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Jeff Ostrowski · August 4, 2020

4 August 2020 • FEEDBACK

A reader wrote to us: “I must confess to taking oodles of inspiration from the work that you do. When I first found your website it was a revelation. I’ve been a monthly donor ever since. I think the work that you do is absolutely VITAL. There are so many things I’d have never been […]

Jeff Ostrowski · August 1, 2020

1 August 2020 • FEEDBACK

K.S. in Rochester, New York, wrote to us: “Your website is outstanding. It is a rich mine for information and liturgical music. Glad I found it. I’m a retired former orchestra conductor and church music director and organist. While I’m no longer an active church music director and organist (after 45 years with a variety […]

Jeff Ostrowski · July 31, 2020

“Stella Caeli Exstirpavit” • Gregorian Chant During Times Of Pestilence

I would give anything to know how these girls created this recording—because it’s free rhythm!

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Jeff Ostrowski · July 28, 2020

Goal Met • Why We’re Grateful To Our Readers

The pop-up has been taken down…plus, a small gift to our readers!

Jeff Ostrowski · July 23, 2020

PDF Download • “Holy Week and Easter with Gregorian Chant” (797 pages)

Supremely rare Belgian book with Gregorian Chant!

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Jeff Ostrowski · July 22, 2020

22 July 2020 • Five Recent Messages

We are asking our readers to give $5.00 per month (or even $3.00 per month) so we can keep our website online. Here are five recent messages from donors: (#1) Your site is a Godsend. It must continue. I am a church mouse but I can afford $5 a month. Let’s help keep the beautiful […]

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Corpus Christi Watershed

President’s Corner

    Simplest “Agnus Dei” Ever Published
    Our choir is on break during the month of July. I needed a relatively simple “Agnus Dei,” so I composed this setting for organ & voice in honor of Saint René Goupil. It has been called the simplest setting ever composed. I love CARMEN GREGORIANUM (“Gregorian Chant”), especially the ALLELUIAS, INTROITS, and COMMUNION ANTIPHONS. That being said, some have pointed out that certain sections of the Kyriale aren’t as strong as the Graduale or Vesperale. There’s a reason for this—but it would be too complicated to explain at this moment.
    —Jeff Ostrowski
    14th Sunday in Ordinary Time (Year C)
    Our choir is on break during the month of July. However, on the feasts website, the chants have been posted for the 14th Sunday in Ordinary Time (Year C), which is this coming Sunday: 6 July 2025.
    —Jeff Ostrowski
    Bugnini’s Statement (6 November 1966)
    With each passing day, more is revealed about how the enemies of the liturgy accomplished their goals. For instance, Hannibal Bugnini deeply resented the way Vatican II said Gregorian Chant “must be given first place in liturgical services.” On 6 November 1966, his cadre wrote a letter attempting to justify the elimination of Gregorian Chant with this brazen statement: “What really gives a Mass its tone is not so much the songs as it is the prayers and readings.” Bugnini’s cadre then attacked the very heart of Gregorian Chant (viz. the Proprium Missae), bemoaning how the Proprium Missae “is completely new each Sunday and feast day.” There is much more to be said about this topic. Stay tuned.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

“It is true that I have a preference for those who are discarded,” said Francis, for he is a humble man and would be the first to admit it.

— Tim Stanley, writing for “The Telegraph” on 13 March 2023

Recent Posts

  • Simplest “Agnus Dei” Ever Published
  • Bishop François Charrière Vs. Hannibal Bugnini
  • 14th Sunday in Ordinary Time (Year C)
  • “My First Year with the Latin Mass” • A Music Director’s Perspective
  • Boston Auxiliary Bishop: “In offering the Traditional Mass for the first time, after removing the vestments, I knelt in the back pew and wept.”

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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.

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