• Skip to primary navigation
  • Skip to main content
  • Skip to primary sidebar

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.”

  • Donate
  • Our Team
    • Our Editorial Policy
    • Who We Are
    • How To Contact Us
    • Sainte Marie Bulletin Articles
    • Jeff’s Mom Joins Fundraiser
  • Pew Resources
    • Brébeuf Catholic Hymnal
    • Jogues Illuminated Missal
    • Repository • “Spanish Music”
    • KYRIALE • Saint Antoine Daniel
    • Campion Missal, 3rd Edition
  • MUSICAL WEBSITES
    • René Goupil Gregorian Chant
    • Noël Chabanel Psalms
    • Nova Organi Harmonia (2,279 pages)
    • Roman Missal, 3rd Edition
    • Catechism of Gregorian Rhythm
    • Father Enemond Massé Manuscripts
    • Lalemant Polyphonic
    • Feasts Website
  • Miscellaneous
    • Site Map
    • Secrets of the Conscientious Choirmaster
    • “Wedding March” for lazy organists
    • Emporium Kevin Allen
    • Saint Jean de Lalande Library
    • Sacred Music Symposium 2023
    • The Eight Gregorian Modes
    • Gradual by Pothier’s Protégé
    • Seven (7) Considerations
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

Subscribe

It greatly helps us if you subscribe to our mailing list!

* indicates required

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).

Primary Sidebar

Corpus Christi Watershed

President’s Corner

    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski
    PDF Download • “Hymn for 2 Voices”
    Readers who click on this video will see that it starts with verses of the “Pange Lingua” hymn by Saint Thomas Aquinas (d. 1274) arranged for two voices. However, there’s a polyphonic refrain (“Tantum Ergo”) for three voices, taken from Kevin Allen’s Motecta Trium Vocum. If your choir is very small, this piece is for you! You can download the PDF score free of charge—and you can also utilize the rehearsal videos for each individual voice—by navigating yourself to #20323.
    —Jeff Ostrowski

Quick Thoughts

    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

“It is the same Church which has introduced the vernacular into the sacred liturgy for pastoral reasons, that is, for the sake of people who do not know Latin, which gives you the mandate of preserving the age-old solemnity, beauty and dignity of the choral office, in regard both to language, and to the chant.”

— Pope Saint Paul VI (15 August 1966)

Recent Posts

  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”
  • (January 2026) • “Children Singing Plainsong”

Subscribe

Subscribe

* indicates required

Copyright © 2026 Corpus Christi Watershed · Isaac Jogues on Genesis Framework · WordPress · Log in

Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.