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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

Featured

Jeff Ostrowski · December 13, 2022

PDF Download • “Advent Eucharistic Hymn”

I don’t know a more powerful exposition on the Holy Eucharist than this striking hymn by Archbishop Pecham!

Matthew Frederes · December 12, 2022

Recent Book! • “The Politics of Plainchant”

Fascinating details from never-before-seen letters recently discovered in southern France!

Jeff Ostrowski · December 10, 2022

PDF Download • “Kyriale Accompaniment Book” by Dr. Peter Wagner (138 pages)

… including a deliciously dazzling discovery you won’t want to miss!

Dr. Charles Weaver · December 8, 2022

Gregorian Rhythm Wars • “The Limits of History”

There’s nothing necessarily authentic about the “authentic” rhythm.

Jeff Ostrowski · December 6, 2022

Gregorian Rhythm Wars • “Jeff’s Second Response to Patrick” (6 Dec 2022)

You look upon these thousands of manuscripts in much the same way that I view the plainsong editions of Guillaume-Gabriel Nivers.

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 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 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 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 16, 2022

PDF Download • Rare “Kyriale” Organ Accompaniment Book (175 pages)

Including a few brief responses to Professor Charles Weaver.

Corrinne May · November 14, 2022

Help Me Banish ‘Wimpy’ Hymn Texts!

Preparing this blog, I discovered interesting snippets about the hymn, the composer, the translator, and even the poet who penned these lines in Latin!

Dr. Charles Weaver · November 13, 2022

Gregorian Rhythm Wars • “Charlie’s First Response to Jeff” (13 Nov 2022)

Ostrowski, wishing to avoid fussiness, may justifiably refuse this invitation. But to argue, as he has, that these signs and the prayerful and aesthetic movements they embody are “illicit” is just wildly off the mark.

Jeff Ostrowski · November 13, 2022

PDF Download • “Gregorian Accompaniments” … Just in time for Advent! (366 pages)

The second half of today’s article answers questions submitted by Mr. Matthew Frederes.

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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

“The director should not allow any one to pre-intone who is not able to do it, lest ridiculous mistakes should occur; he should suppress all singing out of tune, all shouting, and all arbitrary harmonising by the singers, and should see that in responding to the celebrant, the choir invariably take up the tone corresponding to his.”

— Manual of Roman Chant (1860) by a Priest of the Congregation of the Most Holy Redeemer

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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