• 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
    • “Let the Choir Have a Voice” (Essay)
  • 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

“Unsolved Mysteries” • What Happened To This Institute?

Jeff Ostrowski · October 11, 2024

HE IMPRESSIVE collection of vernacular plainsong propers known as The O’Fallon Propers was published in the 1960s by SAINT MARY’S INSTITUTE in O’Fallon, Missouri. But what exactly was “SAINT MARY’S INSTITUTE”—and who was in charge of it? From what I can tell, the motherhouse for the Sisters of the Most Precious Blood was located in O’Fallon (just west of St. Louis, Missouri). The SAINT MARY’S INSTITUTE seems to have been intimately connected with Dom Ermin Vitry, OSB, who was born on 22 December 1884 in Lobbes, a village in Belgium. Vitry entered religious life at the magnificent Maredsous Abbey in 1902, one year before the sacred music legislation of Pope Saint Pius X was issued in 1903.1

Dom Ermin Vitry • Dom Ermin Vitry was ordained a Benedictine priest in 1907. At the LEMMENSINSTITUUT, he studied organ with the legendary Edgar Tinel (d. 1912). The Benedictines sent him from Belgium to the United States where he served as director of music for the SAINT MARY’S INSTITUTE—but sources disagree vis-à-vis the precise years this took place. For the record, Monsignor Martin B. Hellriegel served as chaplain for the O’Fallon sisters from 1918-1940. Vitry and Hellriegel knew each other. When the O’Fallon Propers were published, the creators wrote as follows:

The Institute • One source says: “As choir director, Dom Ermin taught the Sisters an appreciation of sacred liturgical music through Gregorian Chant.” In a (very brief) biography of Dom Vitry published in 1988, Monsignor Francis P. Schmitt insinuates that Vitry was the driving force behind what would become the O’Fallon Propers. Monsignor Schmitt wrote: “I am no enthusiast for English chant, never have been. But I recognize a legitimate place for it…” He then went on to say:

“The late Dom Ermin Vitry and the recently deceased Charles Dreisoerner (either of whom forgot more about Gregorian than most pundits I encounter these days will ever know) both felt that, in some measure, the preservation of Gregorian as the song of the faithful, the saving of it from a second and final death, depended upon a viable vernacular use.”

Mysterious • Some people believe that Monsignor Hellriegel was the actual composer of The O’Fallon Propers. One thing is certain: its 483 pages must have been in production for many years before its publication in 1964. I would welcome any information about what remains of SAINT MARY’S INSTITUTE or the Sisters of the Most Precious Blood in O’Fallon.

Here’s a photograph of Dom Ermin Vitry taken circa 1935:

1 This motu proprio was known as “Inter Pastoralis Officii Sollicitudines.” Some people also refer to it by the Italian name: “Tra Le Sollecitudini.”

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

Filed Under: Articles Tagged With: Dom Ermin Vitry, Inter pastoralis officii Pius X, Monsignor Francis P Schmitt, Monsignor Martin B. Hellriegel, O'Fallon Missouri Mass Propers, O’Fallon Propers in Plainsong, Sisters of the Most Precious Blood, The O’Fallon Propers, Tra le sollecitudini, Tra Le Sollecitudini Motu Proprio Last Updated: March 23, 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

    Season’s End Repertoire
    Looking at the REPERTOIRE SHEET until the end of the choral season, I see that I’ve fallen behind schedule. (The last three months have been extraordinarily busy.) As you know, I have been providing organ harmonies for all the ENTRANCE CHANTS—as well as rehearsal videos—and you can see I’m behind where I planned to be. Now I must make up lost ground. However, the choir picks up the ENTRANCE CHANT with ease, so I’m sure it will all work out. My ‘unofficial’ harmonizations are being posted each week at the flourishing feasts website.
    —Jeff Ostrowski
    PDF Download • “Funeral Procession”
    From a mediæval Book of Hours, I was sent this glorious depiction of a Roman Catholic funeral procession by Simon Bening (d. 1561). The image resolution is extremely high. I’m not sure I know of a more beautiful illustration of a mediæval church. And I love how the servers are wearing red and pink cassocks!
    —Jeff Ostrowski
    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

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

“We must say it plainly: the Roman rite as we knew it exists no more. It has gone. Some walls of the structure have fallen, others have been altered—we can look at it as a ruin or as the partial foundation of a new building. Think back, if you remember it, to the Latin sung High Mass with Gregorian chant. Compare it with the modern post-Vatican II Mass. It is not only the words, but also the tunes and even certain actions that are different. In fact it is a different liturgy of the Mass.”

— Fr. Joseph Gelineau (1978)

Recent Posts

  • Season’s End Repertoire
  • PDF Download • “Funeral Procession”
  • Re: The “Correct” Way To Sing Gregorian Chant
  • PDF Download • Ascension “Entrance Chant”
  • Every Artist Needs a Refuge

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.