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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

“Ad Te Levavi” • Variant

Jeff Ostrowski · January 9, 2026

EING INVOLVED in the world of Gregorian Chant scholarship can be a bit frustrating. I say this because basic ideas are repeated over and over, yet certain parties (who should know better) pretend not to understand. For instance, it’s important to realize why the EDITIO VATICANA was created. It is a CENTO. In other words, it does not intend to reproduce a certain manuscript written in a certain century by a certain monastery. Again, it’s a CENTO, which took into consideration the entire tradition of authentic plainsong—not just a handful of manuscripts from a particular monastery. That’s why it’s nonsensical to ‘interpret’ the EDITIO VATICANA by placing adiastematic neumes from a particular manuscript above its notes, in the same way it would be nonsensical and reprehensible to ‘interpret’ a piece by Brahms using pedal markings from a composition by Chopin.

Variants • Once we understand why the EDITIO VATICANA was created, we likewise understand there will always be variants. The following is a gorgeous 14th-century variant whose opening hints at tone painting—lifting one’s soul to God—in a way slightly obscured by the EDITIO VATICANA:

*  PDF Download • “Ad Te Levavi” (14th century)

First Letter of the Alphabet • The ‘original’ liturgical year began with Christmas, which is only natural: a birth. But as the centuries rolled along, it was felt that a time of preparation was needed leading up to Christmas. Apparently, that’s how we got ADVENT—although that season still incorporates many of the “end of the book” themes. Nowadays we consider ADVENT the beginning of the liturgical year.

Is it really just a coincidence that—now that ADVENT is considered the beginning of the liturgical year—the very first Introit comes from an alphabetical psalm (Psalm 24: “Ad te, Dómine, levávi ánimam meam”) and starts with the letter A? It’s difficult to believe this was a coincidence.

Regarding Source • Something else must be repeated again and again (because it’s quite important): viz. just because a manuscript currently resides in a particular library, that doesn’t necessarily tell us anything about when or where that manuscript was created. Nor does it necessarily tell us something about who’s responsible for its creation. In other words, the fact that a manuscript is found inside a particularly library in the year 2026 doesn’t necessarily reveal its provenance. Over the last 1,500 years, entire civilizations have risen and fallen. Manuscripts get destroyed, manuscripts get damaged, and manuscripts are often moved from place to place over the centuries.

Whose Ox Is Being Gored • This reality is something very basic; even a child in high school will have no difficulty grasping it. Yet some who self-identify as Gregorian Chant “scholars” appear ignorant of it. Over the past 15 years, I’ve come to believe some feign ignorance in this arena because it depends “whose ox is gored.” In other words, if acknowledging this basic reality causes someone’s ‘pet’ theory to disintegrate, such a one will be quite unwilling to do so.

When You Wish Upon a Star • The origins of many Gregorian Chant manuscripts remain shrouded in mystery. Homo modernus believes that the passage of time reveals all truth—but that’s a lie. As a matter of fact, the passage of time can sometimes leave us with less (!) knowledge vis-à-vis the provenance of ancient MSS. That’s because evidence may emerge which calls into question certain assumptions which had hitherto been accepted as ‘established’ or ‘likely’ or ‘within the realm of possibility’. In spite of the precept of homo modernus, sensible people realize that decades from now we may know nothing more vis-à-vis the provenance of certain ancient MSS.

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

Filed Under: Articles, PDF Download Tagged With: Gregorian Rhythm Wars, Psalm 24 Alphabetical Last Updated: January 9, 2026

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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

    Simplified Accomp. • Schubert’s “Ave Maria.”
    Sometimes the organist must simultaneously serve as the CANTOR. (Those who work in the field of church music know exactly what I’m talking about.) One of our contributors composed this simplified keyboard accompaniment for Franz Schubert’s “Ave Maria,” a piece which is frequently requested for Catholic funerals and weddings. In terms of the discussion about whether that piece is too theatrical (‘operatic’) for use in Church, I will leave that discussion to others. All I know is, many church musicians out there will appreciate this simplified version.
    —Jeff Ostrowski
    “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

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

“The following question is asked by the Most Reverend Lord Bishop of the Diocese of Chur: May this Diocese’s ancient custom be continued of having the Celebrant in Sung Masses (excepting more solemn Masses) intone the Credo and when he is finished reciting it going on immediately to the offertory and finishing it while the credo is being sung by the choir?” (Dubium of Dec 1909)

— 11 December 1909

Recent Posts

  • Simplified Accomp. • Schubert’s “Ave Maria.”
  • “The Unselected Hymn” • Do You Recognize It?
  • 2026 Sacred Music Pilgrimage (Washington DC) • With Richard J. Clark
  • “Reminder” — Month of April (2026)
  • “Gregorian Chant Isn’t a Platform for Your Personal Theories, Jeff” • (A Letter We Received)

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