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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

Gregorian Chant • “How To Sing The Repercussion” (such as: Bistropha, Tristropha, etc.)

Jeff Ostrowski · December 8, 2020

EFORE THE INVENTION of the internet—which gave any owner of a ‘smart phone’ the power to easily conduct Zoom calls with people on different continents—each region in the United States had its own dialect, its own way of pronouncing English. That’s very much like the medieval monasteries; each one had their own particular ‘dialect’ or way of singing Gregorian Chant. Each medieval monastery also had its own handwriting: a particular way the neumes were written. Abbot Pothier, in his 1880 publication Les Mélodies Grégoriennes d’après la tradition, was the one who made the determination as to which were neumes were “the most universal.” For instance, Montpellier H. 159 uses “upside down” quilismas, but Pothier did not adopt those for the official edition.

In Gregorian Chant, instances of the strophicus are not uncommon:

What’s the proper way to sing these notes?

Traditionally, they are divided into groups of Two (2) and Three (3), and each group is given a slight—almost imperceptible—vocal impulse. Consider this Offertory in the third mode, as transcribed by Dom Mocquereau for the “Liber Usualis in Modern Notation,” published in 1924:

Like most Gregorian chant, this Offertory is very ancient.

Here’s how it looked in the 10th century:

Or consider this Offertory from the feast of Epiphany:

It would sound something like this, although I don’t claim to be a great singer.

URING the 1970s, another way of performing these neumes was adopted in certain quarters. This method—sometimes referred to as “the goat repeat”—has a vocal impulse on each punctum. According to this interpretation, each of these notes would receive a small vocal impulse. In my humble opinion, this approach is not as artistically pleasing as the traditional approach, especially for bistropha and tristropha:

On the other hand, Abbot Pothier’s 1908 PREFACE does explicitly allow for such an interpretation. I think the “goat repeat” can work nicely when it comes to pieces such as Kyrie Fons Bonitatis, where I cannot help but “hear internally” the tropes that were removed. In any event, about twenty years ago, I had the amazing privilege to travel to Washington D.C. for private instruction with a priest whom many consider the USA’s preëminent Gregorianist. For several years, he was Eugène Cardine’s boss at the Pontifical institute—so he was quite familiar with the writings and theories of Dom Cardine.

At that time, speaking of repeated notes in Gregorian Chant, I asked the following question:

“In modern music, when we have repeated notes we restrike each one. An example would be Chopin’s Grande Valse Brillante Opus 18. Does that mean we should have a vocal impulse on each note or punctum in plainsong?”

In response, this patient priest explained that I had things 100% backwards. We must avoid looking backwards from modern music; instead we must understand how things developed. In those days, “paper” was non-existent. They had to kill animals and dry the skin to get paper. They had limited tools at their disposal, and didn’t use a system of Whole Notes, Half Notes, Quarter Notes, Sixteenth Notes, and so on—those would come later. In essence, for a “note” they would make a punctum: (1D). If they wanted a longer note, they would make two impressions: (2D). If they wanted a longer note, they would make three impressions: (3D). And so forth:

The key, then, is to avoid looking backward, based on how we interpret musical notation in the year 2020. Instead, we must understand how and why the notation itself developed.

At the beginning of this article, I reminded the reader that each monastery had its own particular way of singing plainsong. It is foolish to seek “the” correct way of singing plainsong properly. The Gregorian repertoire is massive, and different monasteries had different styles of singing. In my opinion, the best way to sing repercussions is the traditional way (SEE ABOVE), because it is artistically pleasing, historically accurate, and unified. At the same time, I don’t deny that Abbot Pothier allowed for the possibility of other approaches to the repercussion in his 1908 PREFACE.

OPE PIUS X appointed a special committee to assemble the Editio Vaticana (“Vatican Edition”), which is still the official edition of the Church. It is the only edition ever imposed by juridical code upon the Church. (The Editio Medicæa was highly encouraged, but not imposed.) Around the year 1904, the committee spent a lot of time fighting about the “true and correct” melodies of the Church. Essentially, the followers of Dom Mocquereau wanted the most ancient version—even when that meant piecing together a version that had never existed. Opposing this were the followers of Dom Pothier, who believed in “organic development”—that is to say, the notion or idea that chants could improve through the centuries as the melodies were sung over and over and slight modifications were made.

One particular chant they fought over was Kyrie Lux et Origo. Basically, the followers of Dom Pothier favored the “Teutonic Dialect,” which tended to make every MI into a FA and every TI into a DO. The followers of Dom Mocquereau favored a version with TI—also found in the ancient MSS—as you can see here:

Who was correct? Dom Mocquereau or Dom Pother? They both were; there is no “correct” answer. At the end of the day, a choice needs to be made. Once that choice has been made for the entire Church—as it was under Pope Pius X—it seems counterproductive to insist upon a particular reading when we consider how vast the Gregorian tradition is, and the changes it has undergone through the centuries.

When the Editio Vaticana was released, it became fashionable to say the previous editions had been utter garbage. To be fair, they were pretty awful compared to what Abbot Pothier produced. However, consider this statement regarding Dom Ermin Vitry (1884-1960):

I remember Father Vitry, an adamant adherent to the Vaticana of 1905, remarking that the old chant, like that of Mechelen and Ratisbon, couldn’t have been all that bad, since he had been brought up on it. It was musicologically indefensible, but the musicological aspects of chant were not far advanced, and the basic plea was not only for an aesthetic or scientific norm, but for the guarantee of a universally acceptable official song. With more aesthetics and more science, the same plea would be made for the Vaticana. The fight has been going on for a long time, and will probably continue.

Consider this remarkable Graduale from the year 1800 in Quebec:

Le Graduel romain (John Neilson, 1800AD). A collection containing all the chants for the Proper of the mass: introit, gradual, tract or alleluia, offertory, and communion, as well as those for the Feasts of Our Lord (the Proper of the Time) and of the Saints (the Common of the Saints). Accompanied by a text, the square notation is printed in movable type on a four-line staff. The name Graduel comes from the response sung after the first reading from the bible which, until the papacy (590-604) of Gregory the Great, was read by the deacon on the “gradus” (steps) of the “ambo” (oblong elevated pulpit reserved for the proclamation of the Gospel). The models for the first Canadian edition of the Graduel romain, published in Quebec City in 1800, were the Graduel from the diocese of Vannes in Brittany and the books of Lyon. The first musical notation to be printed in Canada, the Quebec edition came into being through the initiative of John Neilson, who also published the Processional romain (1801) and the Vespéral romain (1802).

In all seriousness, many of the Propers are quite nice in this book—although still “corrupt” compared to the Editio Vaticana. Indeed, the following (not Credo VI, but Sanctus XI, and Agnus Dei XI) are almost identical to what we have:

I think the most important thing is that the music be beautiful, dignified, and prayerful.

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

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Filed Under: Articles, Featured Tagged With: BISTROPHA, Gregorian Chant Repercussion, TRISTROPHA Last Updated: April 28, 2021

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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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President’s Corner

    “Reminder” — Month of April (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 Accompaniment (Easter Hymn)
    Number 36 in the Brébeuf Hymnal is “At the Lamb’s high feast we sing,” an English translation for Ad Cenam Agni Próvidi (which was called “Ad Régias Agni Dapes” starting 1631). As of this morning, you can download a simplified keyboard accompaniment for it. Simply click here and scroll to the bottom. Many organists are forced to serve simultaneously as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult—which explains why choirmasters appreciate these simplified keyboard accompaniments. Sadly, many readers will click that link but forget to scroll to the bottom where the simplified PDF file is located.
    —Jeff Ostrowski
    PDF Download • “Quasi Modo Sunday”
    The Introit for “Quasi Modo Sunday” (12 April 2026) is particularly beautiful. The musical score can be downloaded as a PDF file, and so can the organ accompaniment. The official language of the Catholic Church is Latin (whereas Greek is our mother tongue). Vatican II said Gregorian Chant must be given “first place” under normal circumstances. As a result, some parishes will rightly sing the authentic version. On the other hand, because so many USA dioceses disobey the mandate of Vatican II, some musicians sing plainsong in the vernacular. I have attempted to simultaneously accompany myself on the pipe organ while singing the English version. Although very few take advantage of it, the complete Proprium Missae is posted at the flourishing feasts website.
    —Jeff Ostrowski

Quick Thoughts

    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
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski

Random Quote

“Of course, the new [Easter Vigil] liturgy has greatly streamlined the symbology. But the exaggerated simplification has removed elements that used to have quite a hold on the mindset of the faithful. […] Is this Easter Vigil liturgy definitive?”

— Paul VI to Virgilio Noè (10 April 1971)

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