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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

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Jeff Ostrowski · December 20, 2024

Rorate Caeli + ICEL + Dynamic Equivalence

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

Jeff Ostrowski · December 19, 2024

“Music List” (4th Sunday of Advent, Year C)

Readers have expressed interest in perusing the “music list” I’ve prepared for this coming Sunday.

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 18, 2024

Communion (4th Sunday of Advent)

It certainly seems like most of the Advent antiphons come from the book of Isaiah…

Jeff Ostrowski · December 18, 2024

PDF Download • New Version of “What Child Is This” (SATB) … as of 18 December 2024

A different version was requested. I was able to complete that task earlier today.

Jeff Ostrowski · December 17, 2024

PDF Download • “Order of Music” (Funerals)

I have made some changes to my “musical list” for funerals.

Jeff Ostrowski · December 17, 2024

PDF Download • “The First Nowell” in Latin — Simplified Version (2024) for Choir & Organ

If you have items you’d like to learn (such as how to make multi-track rehearsal videos) please email them to us.

Jeff Ostrowski · December 13, 2024

PDF Download • “What Child Is This?” (SATB arr.)

In my view, this one falls within the “Top Ten” list of Christmas carols.

Jeff Ostrowski · December 8, 2024

“Entrance Chant” • 3rd Sunday of Advent

This Introit is in the first mode.

Jeff Ostrowski · December 7, 2024

For The Record …

It strikes me as quite “Adventy”—for lack of a better term.

Jeff Ostrowski · December 7, 2024

PDF • “Advent Kyrie Accompaniment”

Kyrie XVII: “In dominicis Adventus et Quadragesimae.”

Jeff Ostrowski · December 6, 2024

Music List • (Immaculate Conception)

Readers have expressed interest in perusing the “music list” I’ve prepared for this feast.

Jeff Ostrowski · December 6, 2024

PDF Download • “Musical Outline” for the Feast of Our Lady’s Immaculate Conception

Rachmaninoff said: “Nine hours? That’s nothing. For a period of my life, I used to practice 17 hours a day.”

Jeff Ostrowski · December 3, 2024

PDF Download • Pristine Scan: Father Mathias’ 1905 Kyriale Organ Accompaniment (186 pages)

Father Mathias served as organist for Strasburg Cathedral, where he founded the “Saint Leo Institute for Church Music” in 1913.

Jeff Ostrowski · December 3, 2024

Organ Accompaniment • “Kyrie IV”

This was inspired by Florentinus Peeters (d. 1986).

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Corpus Christi Watershed

President’s Corner

    PDF Download • “For Pentecost Sunday”
    Yesterday morning, I recorded myself singing the ENTRANCE CHANT for Pentecost Sunday while simultaneously accompanying myself on the pipe organ. Click here to see how that came out. At the end of the antiphon, there’s a triple Allelúja and I just love the chord at the end of the 2nd iteration. The organ accompaniment—along with the musical score for singers—can be downloaded free of charge at the flourishing feasts website. For the record, the antiphon on Pentecost Sunday doesn’t come from a psalm; it comes from the book of Wisdom.
    —Jeff Ostrowski
    PDF Download • “Organ Accompaniment”
    Over the past few years, I’ve been harmonizing all the vernacular plainsong Introit settings by the CHAUMONOT COMPOSERS GROUP. This coming Sunday—10 May 2026—is the 6th Sunday of Easter (Year A). The following declaration will probably smack of “blowing my own horn.” However, I’d rank this accompaniment as my best yet. In this rehearsal video, I attempt to sing it while simultaneously accompanying myself on the pipe organ. The musical score [for singers] as well as my organ accompaniment can be downloaded free of charge from the flourishing feasts website.
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 4 May 2026
    A few days ago, the CORPUS CHRISTI WATERSHED Facebook page posted this Gregorian Chant quiz regarding a rubric for the SEQUENCE for the feast of Corpus Christi: “Lauda Sion Salvatórem.” There is no audience more intelligent than ours—yet surprisingly nobody has been able to guess the rubric. Drop me an email with the right answer, and I’ll affirm your brilliance to everyone I encounter!
    —Jeff Ostrowski

Quick Thoughts

    “Thee” + “Thou” + “Thine”
    Few musicians realize that various English translations of Sacred Scripture were granted formal approval by the USCCB and the Vatican for liturgical use in the United States of America. But don’t take my word for it! Here are four documents proving this, which you can examine with your own eyes. Some believe the words “Thine” and “Thou” and “Thee” were forbidden after Vatican II—but that’s incorrect. For example, they’re found in the English translation of the ‘Our Father’ at Mass. Moreover, the Revised Standard Version (Catholic Edition) mentioned in those four documents employs “Thine” and “Thou” and “Thee.” It was published with a FOREWORD by Westminster’s Roman Catholic Archbishop (John Cardinal Heenan).
    —Jeff Ostrowski
    “Reminder” — Month of May (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    Simplified Version • “Canon in D” (Pachelbel)
    I published an article on 11 November 2023 called Wedding March For The Lazy Organist, which rather offhandedly made reference to a simplified version I created in 2007 for Pachelbel’s Canon. I often use it as a PROCESSIONAL for weddings and quinceañeras. Many organists say they “hate” Pachelbel’s Canon. But I love it. I think it’s bright and beautiful. I created that ‘simplified version’ for musicians coming to grips with playing the pipe organ. It can be downloaded as a free PDF if you visit Andrea Leal’s article dated 15 August 2022: Manuals Only: Organ Interludes Based on Plainsong. Specifically, it is page 84 in that collection—generously offered as a free PDF download. Johann Pachelbel (d. 1706) was a renowned German organist, violinist, teacher, and composer of over 500 works. A friend of Bach’s family, he taught Johann Christoph Bach (Sebastian Bach’s eldest brother) and lived in his house. Those who read Pachelbel’s biography will notice his connection to two German cities adopted as famous hymn tune names: EISENACH and ERFURT.
    —Jeff Ostrowski

Random Quote

There is a lack of that kind of organization which favors mature judgment. Move on, move on, get it out. Schemata are multiplied without ever arriving at a considered form. The system of discussion is bad … Often the schemata arrive just before the discussions. Sometimes, and in important matters, such as the new anaphoras, the schema was distributed the evening before the discussion was to take place … Father Bugnini has only one interest: press ahead and finish.

— Cardinal Antonelli (Peritus during the Second Vatican Council)

Recent Posts

  • “Thee” + “Thou” + “Thine”
  • PDF Download • “For Pentecost Sunday”
  • “Reminder” — Month of May (2026)
  • “Englished” Gregorian Chant • 5 Considerations
  • Simplified Version • “Canon in D” (Pachelbel)

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