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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

Glancing at Eurydice: Why Read Medieval Theory?

Dr. Charles Weaver · October 2, 2024

HERE’S SOMETHING that happens to teachers every autumn, and it has certainly been true of me this year. The academic term starts up with infinite promise, and all of a sudden we look up, emerging from the inevitable chaos that ensues, and see that it is October. I’m teaching a lot of new material this year (including lots of Baroque plainchant), and I have many new students, who are very inquisitive and very engaged. I’ve been so wrapped up in teaching that I’ve done precious little reading or writing. It would probably be better if we all were able to take a little time to do some musical reading and reflection that wasn’t pointed directly at the task at hand, whether teaching or putting music together for the parish schola.

Recently, when I had finally settled down to do some reading aimed more at the long term (Daniel Saulnier’s last book on the modes), I came across a quotation from Musica enchiriadis, (ME), that took my breath away and got me thinking about how much value there is in just poking around in old books about music, without trying to read with a specific agenda. ME, whose title means something like The Music Handbook is one of the ninth century treatises that is foundational in medieval music theory. Usually we learn about this book for its discussion of improvised polyphony (organum). But the last chapter is striking and is easy to gloss over. Here is the text of the first part of that chapter in Raymond Erickson’s very readable English translation, which is mostly available only in libraries now:

The ancients tell that Aristeus was in love with the nymph Eurydice, spouse of Orpheus. While fleeing her pursuer (Aristeus), she was killed by a snake. We perceive an Orpheus whose name signifies oreo phone—“the best voice”—in a skilled singer (cantor peritus) or in sweet-sounding melody. If any “good man,” as Aristeus may be translated, pursues Eurydice—that is, “profound understanding”—out of love, he is hindered by divine wisdom, lest she be entirely possessed, as if by the snake. But while she in turn is called forth from her hidden places and from the underworld by Orpheus, that is, by the most noble sound of song, she is seemingly led up into the atmosphere of this life and, as soon as she seems to be seen, is lost.
 
So, as in other things that we discern only partly and dimly, this discipline does not at all have a full, comprehensible explanation in this life. To be sure, we can judge whether the construction of a melody is proper and distinguish the qualities of tones and modes and the other things of this art. Likewise, we can adduce, on the basis of numbers, the musical intervals or the symphonies of pitches and give some explanations of consonance and dissonance. But in what way music has so great an affinity and union (commutatio et societas) with our souls—for we know that we are bound to it by a certain likeness—we cannot express easily in words.

What’s going on here? We’ve been reading about some technicalities of organization (in the organic organum sense!), and all of a sudden we are wrenched into this work of Greek mythology. You probably know the Orpheus myth from Ovid, or perhaps from the splendid operatic treatments by Monteverdi, Charpentier, or Gluck. The semi-divine Orpheus wins the love of the fair nymph Eurydice, but on their wedding day she is bitten by a snake and dies. Orpheus journeys to the underworld and uses his amazing musical prowess to win over the inhabitants to his cause, convincing Pluto, the god of the underworld, to release Eurydice, on the condition that Orpheus walk in front of her and that he not look back until he reaches the upper world again. But he is plagued by doubt and ends up looking back too soon, only to see her vanish forever.

The author of ME uses this story not to create an operatic spectacle but rather an exegetical one, for he reads the story allegorically. Here, Eurydice stands for understanding—in this context, we might say musical understanding. Have you ever noticed how hard it is to speak about the actual experience of music? This is the theme of a book (Music and the Ineffable) by a very different philosopher from the twentieth century, Vladimir Jankélévitch. The idea is simple and practically irrefutable: whenever we try to talk about music, we run up against something that defies being put into words, so we end up resorting to all kinds of metaphors that utterly fail to capture the experience of actually hearing music. Jankélévitch calls this our alibi. We might talk about the composer, the composer’s mood, the composer’s personal life, the social and historical of a particular piece and how it is reflected in the music. To take it a little bit closer to home for the theory teacher, we might talk about the formal structure, the melodic or harmonic design, the various spatial metaphors (high, low, deep, leaping, stepwise, running), all of which fail in some way. I believe the author of ME is saying much the same thing, and it’s a good lesson.

We can listen to music, or we can also read about music, in this case, chant and its modes and its melodic designs. But to try to use these things to bring about perfect understanding is to try to bring Eurydice (wisdom) up into the light of day, which the gods will not suffer us to do. “We discern only partly and dimly,” which is as true when we sing as when we read about music or try to work out how a piece of chant is put together, or even when we wade into the deep waters of modal ethos. We don’t hear the chant as God does, but He allows us to have just a fleeting glimpse (the “Best voice’s” backward glimpse at “perfect understanding” as she recedes into the bowels of the earth) when we sing, by way of the mysterious affinity that music has for our souls.

I was so touched to see that an author in the ninth century so perfectly captured this experience of those precious, rare mental/aural glimpses of true understanding we all have occasionally when we hear or sing Gregorian chant. To me, it is passages like that that make the ancients’ writings so worthwhile to read and teach. It’s also heartening for those of us who spend our time teaching to bear this in mind, especially as we do our best to impart some of our limited and imperfect understanding to our students.

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

Filed Under: Articles Last Updated: October 6, 2024

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About Dr. Charles Weaver

Dr. Charles Weaver is on the faculty of the Juilliard School, and serves as director of music for St. Mary’s Church. He lives in Connecticut with his wife and four children.—(Read full biography).

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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

“Eucharistic Prayer II, on account of its particular features, is more appropriately used on weekdays or in special circumstances.”

— §365 from the “General Instruction for the Roman Missal”

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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