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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

Agnus Dei • “Missa Mille Regretz” by Fr. Cristóbal de Morales (d. 1553)

Jeff Ostrowski · October 3, 2017

OOKING AT MUSIC on the page is one thing, but hearing it real life is a different matter. I’ll never forget hearing Dr. Alfred Calabrese run through Guerrero’s KYRIE on the opening day of our very first Sacred Music Symposium. As a composer, I was in awe of what Guerrero had done: his grasp of musical DENSITY was life-changing. (No recording can capture this.)

These composers were aware of the overtone series, which is sometimes described as a series of “imaginary notes.” Let us consider an AGNUS DEI by Guerrero’s teacher, Fr. Cristóbal de Morales. The following recording—which I consider to be quite beautiful, especially for those familiar with this piece—was created by members of the volunteer choir I direct here at FSSP.la.

In measure 38, Tenors combine into unison on C—do you hear an imaginary girl’s voice singing a high G? (That’s a strong overtone.) Listen to the 1:31 marker:

REHEARSAL VIDEOS for each individual voice await you at #4297.
The full PDF score can be downloaded there.

Please download this Mp3, and listen to it carefully a billion times in your car:

    * *  Mp3 • AGNUS DEI (Part 3) from Missa Mille Regretz

    * *  PDF • AGNUS DEI (Part 3) from Missa Mille Regretz

…what a gorgeous piece!

THE FRATERNITY OF SAINT PETER in Los Angeles released a Promo Video celebrating the 10-year anniversary of “Summorum Pontificum.” The recording above was chosen as the soundtrack, and here’s a translation for the Chanson which Fr. Morales used as his melodic basis for Missa Mille Regretz:

Modern French:
Mille regrets de vous abandonner
et d’être éloigné de votre
visage amoureux.
J’ai si grand deuil
et peine douloureuse
qu’on me verra vite mourir.

English Translation:
A thousand regrets at deserting you
and leaving behind your loving face,
I feel so much sadness
and such painful distress,
that it seems to me my days
will soon dwindle away.

It’s fitting, in a way, because many priests I’ve asked about the 1960s reforms have expressed regret. When they opened up the new Missal for the first time (they explain) they saw that much of the beautiful symbolism and holy gestures of the ancient liturgy had been eliminated. As one bishop put it, “I knew it was gone for good.” Nobody at that time could have even hoped for something like “Summorum Pontificum.”

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

Filed Under: Articles Last Updated: January 1, 2020

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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

    💲 5.00 💵
    Our tiny 501(c)3 nonprofit organization exists solely by generous readers who donate $5.00 per month. We have no endowment; we have no major donors; we run no advertisements; we have no savings. A donor wrote to us: “I so appreciate all you do and have done, and your generosity is unprecedented. I am honored to be able to make a monthly contribution.” Another monthly donor says: “Thank you for everything CC Watershed does. We are able to add so much solemnity to Holy Mass due to the resources made available here.” Can you spare a few dollars each month to help us survive?
    —Corpus Christi Watershed
    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

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

The Sanctus and Benedictus are one text and should be sung through without a break. The practice—once common—of waiting till after the Consecration and then singing: “Benedictus qui venit…” is not allowed by the Vatican Gradual.

— Father Fortescue, writing in 1912

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