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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 5, 2022

“Urbanite Hymns” • What are those?

Dr. Aaron James, who earned a double doctorate, has stated publicly that the Saint Jean de Brébeuf Hymnal does a wonderful job explaining—by means of gorgeous color plates—the difference between the “Pre-Urbanite” hymns and those which were modified by Pope Urban VIII (d. 1644). Dr. James calls the Brébeuf treatment of the urbanite reform “a […]

Jeff Ostrowski · December 3, 2022

PDF Download • Organ Accompaniment Booklet: Vespers (2nd Sunday of Advent) — 27 pages

Dom Gajard said to Jean Langlais: “Hear the blackbird! It doesn’t know what an ‘ictus’ is, yet it sings better than we.”

Jeff Ostrowski · December 3, 2022

“Do this immediately!” • (Dec. 2022)

December is here! That means I must issue a monthly reminder to all: please subscribe to our free mailing list! It couldn’t be easier: (a) Go to any article; (b) Scroll to the bottom; (c) Enter your email address. We exist solely by the generosity of small donors. We have no endowment; we have no major […]

Jeff Ostrowski · December 2, 2022

PDF Download • “Latin Christmas Carol” for SATB + Organ • By Gustaaf Nees (d. 1965)

I’m not embarrassed, because these practice videos save us time during rehearsals.

Jeff Ostrowski · November 29, 2022

“Advent Hymn” • Composed by Flor Peeters

Peeters was organist at Malines Cathedral from 1923 until his death in 1986.

Jeff Ostrowski · November 28, 2022

28 November 2022 • FEEDBACK

“I can’t thank you enough for that four-part download of the Graduale with 5 lines. That is absolutely brilliant! Since I and another guy from the choir chant the Traditional Propers every Sunday, it has proven to be an invaluable resource. Great job of scanning it, too.” —Email received this morning from S.M.D.

Jeff Ostrowski · November 28, 2022

Photographs • Weinmann “Graduale” on 5 Lines!

They were not allowed to remove their boots, so thousands had their feet amputated (as the frostbite often turned into gangrene).

Jeff Ostrowski · November 27, 2022

PDF Download • “1st Sunday of Advent”

Those who accompany VESPERS FOR THE FIRST SUNDAY OF ADVENT may wish to download this draft copy. It’s the organ accompaniment I use, since my parish has Vespers (in the Extraordinary Form) with our congregation each Sunday afternoon. It looks pretty ‘junky’ but it gets the job done. Someday I hope to make a much […]

Jeff Ostrowski · November 27, 2022

Advent Hymn Experiment

Our volunteer choir tried something I wanted to share…

Jeff Ostrowski · November 26, 2022

“Trochee Trouble” • Say What?

We have posted many articles discussing the French Vs. German way of interpreting syllabic plainsong—which some refer to as “Trochee Trouble.” Needless to say, we encourage everyone to carefully read all those articles. But some folks still don’t understand what “Trochee Trouble” is all about. Therefore, I have created this 1-Page Sheet that explains it […]

Jeff Ostrowski · November 25, 2022

PDF Download • Traditional Notation Gradual-Book (692 Pages) on Five Lines!

This book makes it easy for singers who only know Treble Clef.

Jeff Ostrowski · November 20, 2022

PDF Download • “How Does the Official Rhythm Actually Sound?”

Including three (3) professionally-scanned versions of the Kyriale, released here for the 1st time!

Jeff Ostrowski · November 18, 2022

Directing Choirs • “Do You Have What It Takes?”

Church music should not be boring! Here I provide eleven (11) ways to keep it awesome.

Jeff Ostrowski · November 17, 2022

“Progress Made!” • 10-Nov-2022

My volunteer choir has felt the repercussions of this year’s (particularly severe) flu season. Nevertheless, I believe in always—always—giving one’s best as a choir director, even when many singers are absent. You can hear by this brief recording that our singers are starting to blend very nicely. And you can download that choral “warm-up” exercise […]

Jeff Ostrowski · November 16, 2022

Mark Your Calendars!

Have you marked your calendar for Sacred Music Symposium 2023? The dates were recently revealed. You don’t want to miss this! This annual event has gained a reputation as the church music conference par excellence vis-à-vis Catholic musicians “in the trenches.”

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Corpus Christi Watershed

President’s Corner

    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
    “Rare Photographs” • Hannibal Bugnini
    On 2 September 2025, we included in this article extremely rare photographs of Archbishop Hannibal Bugnini taken in Iran circa 1979. Bugnini had initially been banished by the pope to Uruguay, but he refused to obey. [This is interesting, since Bugnini relied upon ‘blind obedience’ when it came to modifications of the ancient liturgy.] After he refused to obey the order from the pope, Hannibal Bugnini was banished to Iran. You can also watch a short video of Hannibal Bugnini in Iran, dated 10 November 1979. That’s about a week after the USA embassy hostage crisis began in Tehran, and Pope Saint John Paul II had sent the leader of the Iranian Revolution a special letter.
    —Jeff Ostrowski

Quick Thoughts

    “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
    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski

Random Quote

10 February 1588: “All incompetent singers in the cathedral are warned that they must immediately begin to improve themselves or be fined. Regularly scheduled practice hours shall be announced, and all incompetents must attend. No one shall henceforth sing anything by way of a solo except those whose names the dean communicates to Guerrero.”

— From the “Life of Father Francisco Guerrero”

Recent Posts

  • “Reminder” — Month of May (2026)
  • “Englished” Gregorian Chant • 5 Considerations
  • Simplified Version • “Canon in D” (Pachelbel)
  • PDF Download • “Organ Accompaniment”
  • “Gregorian Chant Quiz” • 4 May 2026

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