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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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Corpus Christi Watershed

President’s Corner

    PDF Download • “Organ Accompaniment”
    Over the past few years, I’ve been harmonizing all the vernacular plainsong Introit settings by the CHAUMONOT COMPOSERS GROUP. This coming Sunday—10 May 2026—is the 6th Sunday of Easter (Year A). The following declaration will probably smack of “blowing my own horn.” However, I’d rank this accompaniment as my best yet. In this rehearsal video, I attempt to sing it while simultaneously accompanying myself on the pipe organ. The musical score [for singers] as well as my organ accompaniment can be downloaded free of charge from the flourishing feasts website.
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 4 May 2026
    A few days ago, the CORPUS CHRISTI WATERSHED Facebook page posted this Gregorian Chant quiz regarding a rubric for the SEQUENCE for the feast of Corpus Christi: “Lauda Sion Salvatórem.” There is no audience more intelligent than ours—yet surprisingly nobody has been able to guess the rubric. Drop me an email with the right answer, and I’ll affirm your brilliance to everyone I encounter!
    —Jeff Ostrowski
    “Rare Photographs” • Hannibal Bugnini
    On 2 September 2025, we included in this article extremely rare photographs of Archbishop Hannibal Bugnini taken in Iran circa 1979. Bugnini had initially been banished by the pope to Uruguay, but he refused to obey. [This is interesting, since Bugnini relied upon ‘blind obedience’ when it came to modifications of the ancient liturgy.] After he refused to obey the order from the pope, Hannibal Bugnini was banished to Iran. You can also watch a short video of Hannibal Bugnini in Iran, dated 10 November 1979. That’s about a week after the USA embassy hostage crisis began in Tehran, and Pope Saint John Paul II had sent the leader of the Iranian Revolution a special letter.
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of May (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
    Simplified Version • “Canon in D” (Pachelbel)
    I published an article on 11 November 2023 called Wedding March For The Lazy Organist, which rather offhandedly made reference to a simplified version I created in 2007 for Pachelbel’s Canon. I often use it as a PROCESSIONAL for weddings and quinceañeras. Many organists say they “hate” Pachelbel’s Canon. But I love it. I think it’s bright and beautiful. I created that ‘simplified version’ for musicians coming to grips with playing the pipe organ. It can be downloaded as a free PDF if you visit Andrea Leal’s article dated 15 August 2022: Manuals Only: Organ Interludes Based on Plainsong. Specifically, it is page 84 in that collection—generously offered as a free PDF download. Johann Pachelbel (d. 1706) was a renowned German organist, violinist, teacher, and composer of over 500 works. A friend of Bach’s family, he taught Johann Christoph Bach (Sebastian Bach’s eldest brother) and lived in his house. Those who read Pachelbel’s biography will notice his connection to two German cities adopted as famous hymn tune names: EISENACH and ERFURT.
    —Jeff Ostrowski
    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

Random Quote

“The Chasuble, or upper garment, represents the purple garment which the soldiers put upon Jesus Christ, and the heavy cross that He carried on His blessed shoulders to Mount Calvary.”

— Guide for the Laity (1875)

Recent Posts

  • “Reminder” — Month of May (2026)
  • “Englished” Gregorian Chant • 5 Considerations
  • Simplified Version • “Canon in D” (Pachelbel)
  • PDF Download • “Organ Accompaniment”
  • “Gregorian Chant Quiz” • 4 May 2026

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