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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

PDF Download • Agnus Dei Polyphonic “Choral Extension” (Simple Round by Ravenscroft)

Jeff Ostrowski · December 1, 2025

ODAY, I RELEASE dual settings of the AGNUS DEI. I will also discuss ‘melodic variants’ in plainsong; specifically how their existence ties in with a gruesome battle that took place within the Vatican Commission on Gregorian Chant—a battle over a single note (!) in AGNUS DEI IV. The first setting is based on a round by THOMAS RAVENSCROFT (d. 1635)—which I have adapted for use as a polyphonic choral extension—married to the ‘Simplex’ AGNUS DEI in honor of Saint René Goupil. Because it’s a round, that means you can teach your choir the tune and by so doing simultaneously teach them the harmonies:

*  PDF Download • RAVENSCROFT AGNUS DEI—Round
—Little is known about Ravenscroft, who’s credited with writing “Three Blind Mice.”

You’re welcome to use this rehearsal video to help your singers learn the round. Obviously, you still need to ‘assemble’ it according to how the choral extension is notated on that score. Due to the Thanksgiving holiday, our rehearsal was canceled last week. Nonetheless, because this setting by Ravenscroft is so simple we were able to “put it together” by running through it just once. You can listen to this live recording (Mp3) from yesterday. I don’t claim it’s perfect, but I was extremely pleased to hear it ‘click’ together. Be careful, because once that round enters your ears, it’s hard to banish!

Second Setting • The second setting is a harmonization I composed for AGNUS DEI IV (Cunctipotens Genitor Deus). I hope you enjoy the stepwise movement of the bass line as much as I do. I switch ‘registration’ on the pipe organ with each repetition:

*  PDF Download • AGNUS DEI IV—Organ Accompaniment
—Keyboard accompaniment in three keys: High, Middle, and Low.

The following discussion has to do with AGNUS DEI IV (Cunctipotens Genitor Deus).

Melodic Variants • For approximately ten years (early in my career) I was obsessed with using ‘variants’ of plainsong. Readers know that each monastery had its own style of singing Gregorian Chant. Sometimes, they changed a note here or a note there—and that created innumerable variants. I was hardly alone in this pursuit. For instance, if you listen carefully to the recordings made by the Abbey of Solesmes during the 20th century, you’ll notice certain instances in which they depart from the EDITIO VATICANA.

Coming To My Senses • My obsession with ‘variant’ melodies led to some positive results. For example, I discovered that the melody of Ut quant laxis in the “LIBER USUALIS” created in 1903 by Dom André Mocquereau is much more beautiful than the version found in the EDITIO VATICANA. In spite of little discoveries like that, I eventually came to my senses. I realized that at the end of the day, one must choose some form of the melody. One cannot sing two versions of the same melody simultaneously. In other words, choosing one ‘variant’ by necessity eliminates all others. Therefore, it’s usually best to choose the most common version (viz. the version found in the EDITIO VATICANA, which for 120 years has remained the official edition of the Catholic Church).

A Gruesome Battle • When the Vatican Commission on Gregorian Chant was creating the EDITIO VATICANA, a gruesome fight ensued over just one note. Specifically, some of the early manuscripts for AGNUS DEI IV have this version:

But over the centuries, that tritone was ‘smoothed out’ (eliminated): an example of renovata in melius (“renewed for the better”). Regarding that rather harsh tritone, Dr. Peter Wagner said: “one would not dare to expect such things of the ordinary church singers of the twentieth century!” In other words, it was a bit too ‘modal’ for the German ear of that time.

Two Opposing Teams • The Vatican Commission on Gregorian Chant divided into two camps. The faction led by Dr. Peter Wagner wanted to obey the specific mandate of Pope Saint Pius X, who ordered (on 25 April 1904) that “Gregorian chant is to be restored according to the most ancient manuscripts, but particularly bearing in mind the legitimate tradition contained in the manuscripts over the course of the centuries, as well as the practical use in current liturgy.”

The other team, led by Dom Mocquereau, felt the mandate of Pius X could be ignored. That team was known as the “archaeology and nothing else” (AANE) faction. At one point, Dom Mocquereau accidentally said the quiet part out loud. When I asked what he considered “legitimate tradition,” Dom Mocquereau said development can only be considered “legitimate” when it matched exactly the ancient version. In other words—in the mind of Dom Mocquereau—the only “authentic” development took place when the melody remained identical and didn’t change (at all) from the most ancient version. But sensible people realize that to ‘change’ or ‘develop’ doesn’t mean “remain exactly the same.” In the end, the “legitimate tradition” faction won the day and Pope Pius X rejected the AANE theories.

Conclusion • As I said earlier: it’s only possible to sing one version at a time. Over the years, I have learned to adopt the most common version, unless there’s a grave reason to choose a variant. To be honest, sometimes a ‘variant’ melody strikes us as beautiful mainly because it’s different from what we’ve grown accustomed to.

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles, PDF Download Tagged With: Agnus Dei Choral Extension, archaeology and nothing else, Choral Extensions, Cunctipotens Genitor Deus, Plainsong Melodic Variants, renovata in melius, Simple Polyphony, Simple Steps To Improve Parish Music, Thomas Ravenscroft d 1635 Last Updated: December 1, 2025

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About Jeff Ostrowski

Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He resides with his wife and children in Michigan. —(Read full biography).

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Corpus Christi Watershed

President’s Corner

    Dr. Mahrt explains the ‘Spoken’ Propers
    In 1970, the Church promulgated a new version of the Roman Missal. It goes by various names: Ordinary Form, Novus Ordo, MISSALE RECENS, and so on. If you examine the very first page, you’ll notice that Pope Saint Paul VI explains the meaning of the ‘Spoken Propers’ (which are for Masses without singing). A quote by Dr. William P. Mahrt is also included in that file. The SPOKEN PROPERS—used at Masses without music—are sometimes called The Adalbert Propers, because they were created in 1969 by Father Adalbert Franquesa Garrós, one of Hannibal Bugnini’s closest friends (according to Yves Chiron).
    —Jeff Ostrowski
    PDF • “Music List” (1st Sunday of Advent)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for 30 November 2025, which is the 1st Sunday of Advent (Year A). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is quite memorable, and the fauxbourdon setting of the COMMUNION is exquisite. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    “Music List” • Christ the King Sunday
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for 23 November 2025, which is the 34th Sunday in Ordinary Time (Year C). If such a thing interests you, feel free to download it as a PDF file. In the 1970 Missal, this Sunday is known as: Domini Nostri Jesu Christi Universorum Regis (“Solemnity of Our Lord Jesus Christ, King of the Universe”). As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are conveniently stored at the magnificent feasts website alongside the official texts in Latin.
    —Jeff Ostrowski

Quick Thoughts

    “Translations Approved for Liturgical Use”
    According to the newsletter for USSCB’s Committee on Divine Worship dated September 1996, there are three (3) translations of the Bible which can be used in the sacred liturgy in the United States. You can read this information with your own eyes. It seems the USCCB and also Rome fully approved the so-called NRSV (“New Revised Standard Version”) on 13 November 1991 and 6 April 1992 but this permission was then withdrawn in 1994.
    —Corpus Christi Watershed
    Gospel Options for 2 November (“All Souls”)
    We’ve been told some bishops are suppressing the TLM because of “unity.” But is unity truly found in the MISSALE RECENS? For instance, on All Souls (2 November), any of these Gospel readings may be chosen, for any reason (or for no reason at all). The same is true of the Propria Missæ and other readings—there are countless options in the ORDINARY FORM. In other words, no matter which OF parish you attend on 2 November, you’ll almost certainly hear different propers and readings, to say nothing of different ‘styles’ of music. Where is the “unity” in all this? Indeed, the Second Vatican Council solemnly declared: “Even in the liturgy, the Church has no wish to impose a rigid uniformity in matters which do not implicate the faith or the good of the whole community.”
    —Corpus Christi Watershed
    “Our Father” • Musical Setting?
    Looking through a Roman Catholic Hymnal published in 1859 by Father Guido Maria Dreves (d. 1909), I stumbled upon this very beautiful tune (PDF file). I feel it would be absolutely perfect to set the “Our Father” in German to music. Thoughts?
    —Jeff Ostrowski

Random Quote

They were not ashamed to lay their hands on Sedulius, on Prudentius, on St. Ambrose himself. Only in one or two cases does some sense of shame seem to have stopped their nefarious work. They left “Ave maris stella,” “Jam lucis orto sidere,” and St. Thomas Aquinas’s hymns alone (they would have made pretty work of “Sacris solemniis”). In 1629 their mangled remnants were published.

— Rev’d Adrian Knottesford Fortescue (25 March 1916)

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  • Dr. Mahrt explains the ‘Spoken’ Propers
  • PDF • “Music List” (1st Sunday of Advent)

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