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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

“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.

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: October 11, 2024

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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

    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (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
    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
    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

Why do we never sing “De Spiritu Sancto” (St. Athenogenes) in our churches? There are a dozen translations in English verse. Where could anyone find a better evening hymn than this, coming right down from the catacombs? Our hymnbooks know nothing of such a treasure as this, and give us pages of poor sentiment in doggerel lines by some tenth-rate modern versifier.

— Rev’d Adrian Fortescue (d. 1923)

Recent Posts

  • The Weekday Communions of Lent
  • PDF Download • “Atténde Dómine”
  • “Chant Is Not a Penitential Act” • Lenten Reflection by Daniel Marshall
  • (Ash Wednesday) • Medieval Illumination Depicting the Distribution of Ashes
  • Music List • (1st Sunday of Lent)

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