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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

Dr. Peter Kwasniewski

A graduate of Thomas Aquinas College (B.A. in Liberal Arts) and The Catholic University of America (M.A. and Ph.D. in Philosophy), Dr. Peter Kwasniewski is currently Professor at Wyoming Catholic College. He is also a published and performed composer, especially of sacred music. Read more.

Dr. Peter Kwasniewski · May 22, 2014

Three Categories of Liturgical Problem

We need to know the different kinds of problems there are, and who in the Church is qualified or required to fix them.

Dr. Peter Kwasniewski · May 15, 2014

Dogma as the Servant of Mystery

Dogmatic statements liberate the Christian intellect by establishing it in the truth.

Dr. Peter Kwasniewski · May 8, 2014

Sacred Choral Works CDs Available

These 3 full-length compact discs feature recordings of nearly every score in the 273-page book.

Dr. Peter Kwasniewski · May 1, 2014

A Triple Cord: Liturgy, Aquinas, and CST

The traditional liturgy, the study of St. Thomas Aquinas, and Catholic social doctrine―these three things stand or fall together.

Dr. Peter Kwasniewski · April 24, 2014

“Soft Source of Calm Tranquillity”: The Quiet Mass

A poem set to music by Handel perfectly captures the feelings one has at a quiet low Mass. Here I try to say why this form of the Mass is so special and valuable.

Dr. Peter Kwasniewski · April 17, 2014

Sheed on the Missal of 1968

Frank Sheed is one of my favorite Catholic authors, but when it came time for him to grapple with the liturgical revolution, either his perspicuity or his nerve failed him.

Dr. Peter Kwasniewski · April 10, 2014

Music Beautiful by Nature

The “beautiful” is largely distinguished by the degree to which the beautiful “thing” is in accord with nature.

Dr. Peter Kwasniewski · April 3, 2014

Why We Need the Greatest Art in Catholic Worship

Was it necessary to change our forms of worship to suit “modern man”? And do we need to set aside our glorious musical heritage? Absolutely not.

Dr. Peter Kwasniewski · March 27, 2014

Why Do We Kneel in Church?

Kneeling is a sign that both signifies and helps produce in the soul the disposition of humility before the great King over all the earth.

Dr. Peter Kwasniewski · March 20, 2014

Catholic Identity Crisis: Who Are We? What Do We Believe? How Should We Live?

Eastern Catholics and Christians have maintained the depth, beauty, and sacredness of their liturgical heritage. How does the institutional failure of Roman Catholics to preserve their own heritage affect their ability to evangelize, or even to live a fully Catholic life?

Dr. Peter Kwasniewski · March 13, 2014

The Eternal, Not the Contemporary

Arvo Pärt speaks words of wisdom about why the music of some composers never gets old and why old texts are always young.

Dr. Peter Kwasniewski · March 6, 2014

Seven Theses for the Evaluation of Music

Let us listen consistently to the greatest works in music and make them the exemplars, the teachers, the inspirations and consolations of our interior life as aesthetic beings.

Dr. Peter Kwasniewski · February 27, 2014

Beethoven’s “Missa Solemnis” and the Five Ways of St. Thomas

An imaginative or imaginary (you decide) correlation between the five movements of the greatest proto-Romantic sacred work and the five greatest proofs for the existence of God.

Dr. Peter Kwasniewski · February 20, 2014

Seeking Inspiration in the Renaissance

Just as those who are passionate about sacred music find great inspiration in the Renaissance, so today we can look around at a new rebirth of Catholic tradition and find hope for a renewal of Catholic culture.

Dr. Peter Kwasniewski · February 13, 2014

Why Focus So Much on the Liturgy?

Sometimes people wonder why traditional Catholics make such a big deal of the liturgy. Do they really think it’s the most important thing in the world? As a matter of fact, they do―because it is.

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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

If then Dom Pothier has sometimes adapted authentic melodies found elsewhere in the manuscripts to texts of the Mass it is not, as Mr. X. maintains, because he has “composed them from scratch and declared them as traditional.”

— Most Rev’d Henri Laurent Janssens (25 November 1905)

Recent Posts

  • “Unfair Characterization” • (But Good Question)
  • “Thee” + “Thou” + “Thine”
  • PDF Download • “For Pentecost Sunday”
  • “Reminder” — Month of May (2026)
  • “Englished” Gregorian Chant • 5 Considerations

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