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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.”

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Views from the Choir Loft

PDF Download • Belgian Book of Gregorian Accompaniments (Official Edition)

Jeff Ostrowski · January 31, 2023

OLIEST PRIEST you ever met? That’s a tough question, but one of the holiest was certainly Father Valentine Young (d. 2020). I remember Father Valentine once said: “Jeff, I’ve reached a point in my life where I almost enjoy hearing accompanied plainsong more than unaccompanied.” That statement was two decades ago. At that point in my life, such a statement constituted formal heresy. You see, I used to believe the only ‘valid’ way to sing Gregorian Chant was a cappella (“without accompaniment”). But after almost three decades of singing plainsong, I have come to realize that a well-written accompaniment can add great beauty.1 The following is a recording from last Sunday. You will notice I accompanied our volunteer choir using the NOH harmonies:

Direct Link.

Rare Belgian Book • Corpus Christi Watershed has obtained an extremely rare book of organ accompaniments for Belgium. Readers probably know that each country has special feasts, often celebrating local saints. Interesting items abound in this book. For instance, they wrote an accompaniment for the enormously lengthy SEQUENCE for Saint Lambert of Maastricht (Bishop and Martyr). They wrote an accompaniment for the famous “Gaudeámus” Introit—for the feast of Saint Rumbold of Mechlin—which organists will which to compare with the other “Gaudeámus” harmonizations the LEMMENSINSTITUUT provided in the other volumes.

*  PDF Download • VOLUME VI (“Propers for Belgium”)
—Vol. 6 contains “special propers for the dioceses of Belgium” • 129 pages.

Upcoming Presentation • During this year’s Sacred Music Symposium—which will take place in June of 2023—I will be giving a presentation which will demonstrate (using multiple examples) that excellent Gregorian accompaniments employ the self-same techniques used by the great composers. Monsignor Jules Van Nuffel once wrote:

“A flawless harmonization of Gregorian chant cannot be created by improvisation, no matter the competence and ability of the organist or harmonist.”

Please Help Us • We desire to provide professional and pristine scans for other volumes of the NOH, especially VOLUME V, which contains the Ordinary of the Mass. But professional scans cost a lot of money. We’re a tiny 501(c)3 public charity. We exist solely by the generosity of small donors. We have no endowment; we have no major donors; we run no advertisements; we have no savings. We beg you to consider donating $5.00 per month, or even $3.00 per month.

1 So much depends upon the choir, the acoustic, and each situation. For instance, if I am singing the Requiem Mass with superb singers, I would be annoyed if somebody tried to add an accompaniment to our singing.

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

Filed Under: Articles, Featured, PDF Download Tagged With: Rev Fr Valentine Young OFM Last Updated: January 31, 2023

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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

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday, which is the 2nd Sunday of Lent (1 March 2026). If such a thing interests you, feel free to download it as a PDF file. This feast has magnificent propers. Its somber INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with its fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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

“It is true that I have a preference for those who are discarded,” said Francis, for he is a humble man and would be the first to admit it.

— Tim Stanley, writing for “The Telegraph” on 13 March 2023

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  • Extreme Unction
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  • Which Mass?

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