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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

“Part 3 of 3” • Guerrero Kyrie for Our Lady

Jeff Ostrowski · August 13, 2021

HE PROJECT IS COMPLETE! Choirmasters find themselves in need of a brief yet powerful KYRIE ELEISON for their volunteer choirs—and there’s no better choice than Father Guerrero’s De Beata Virgine II (1582AD). It’s a gorgeous composition—but that’s not all. For instance, consider its third section (below). A choir director can explain how the thema comes directly from the plainsong, then describe how Guerrero’s counter-melody is “like a mirror-image” of the thema, and is picked up by the various voices. The choirmaster can also show how each voice has “balance”—in the sense that voices beginning with long values will be reversed later on (and vice-versa).

For all three movements: click here.

Here’s the third (and final) movement:

*  PDF Download • SECTION 3 of 3
—Father Guerrero’s “Missa De Beata Virgine II”
—Edition: Roma 1582AD.

Rehearsal videos for each individual voice await you at #59773.

More Interesting Things: Choirmasters who teach this piece can point out the “connection points.” What are connection points? One would be the Soprano, which gives the Alto its note in measure 1, then “connects” again in measure 4. The same thing (between the same voices) happens in measure 7 and measure 11. Another connection point would measure 11 and measure 14 between Tenor and Bass. And there are tons more! In measures 8-9 there is a tiny little “baby stretto” between Alto and Tenor; and the same thing happens between Bass and Alto in measures 11-12. In measure 5 and measure 12, the Alto voices gives their note to the Soprano voices (an octave higher). These are just a few examples you can share with your choir.

What Is A Trope? During the Middle Ages, most of the Mass prayers were troped. As Father Friel reminds us, Sequences were tropes. The Kyrie was troped. The Gloria was troped. The Agnus Dei was troped. Even the readings were troped. The Kyrie which Father Guerrero uses (see above) is called “Kyrie Cum Jubilo.” In the Editio Vaticana, it’s called KYRIE IX. If you don’t know what a Trope is, please scroll to the bottom of this article:

*  Article • “Reform of the Reform” • Eight Lies We Were Told

No More Tropes: On 20 July 1562, during the 22nd Session of the Council of Trent, a commission of seven prelates was appointed to examine the question of liturgical abuses. Among the Postulata nonnullorum patrum circa varios abusus in missis subinductos—(“Petitions by certain Fathers about various abuses introduced into Mass”)—one finds the following: “Let those additions Mariam gubernans, Mariam coronans be removed from the hymn Glória in excélsis; they seem an unbefitting insertion” (source). On 7 January 1575, Father Guerrero’s chapter in Sevilla decreed that henceforth the Roman rite, as reformed by the Council of Trent, is to be used exclusively. This decree rendered obsolete such “troped” Masses as Guerrero’s De beata Virgine (1566) as well as polytextual Masses, such as his Beata Mater (1566). [But those who have attended the Sacred Music Symposium know that the texts can be altered so these Masses can still be used.]

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

Filed Under: Articles, PDF Download Tagged With: Missa De Beata Virgine II, Piecemeal Polyphony Last Updated: February 26, 2022

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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 • “For Pentecost Sunday”
    Yesterday morning, I recorded myself singing the ENTRANCE CHANT for Pentecost Sunday while simultaneously accompanying myself on the pipe organ. Click here to see how that came out. At the end of the antiphon, there’s a triple Allelúja and I just love the chord at the end of the 2nd iteration. The organ accompaniment—along with the musical score for singers—can be downloaded free of charge at the flourishing feasts website. For the record, the antiphon on Pentecost Sunday doesn’t come from a psalm; it comes from the book of Wisdom.
    —Jeff Ostrowski
    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

Quick Thoughts

    “Thee” + “Thou” + “Thine”
    Few musicians realize that various English translations of Sacred Scripture were granted formal approval by the USCCB and the Vatican for liturgical use in the United States of America. But don’t take my word for it! Here are four documents proving this, which you can examine with your own eyes. Some believe the words “Thine” and “Thou” and “Thee” were forbidden after Vatican II—but that’s incorrect. For example, they’re found in the English translation of the ‘Our Father’ at Mass. Moreover, the Revised Standard Version (Catholic Edition) mentioned in those four documents employs “Thine” and “Thou” and “Thee.” It was published with a FOREWORD by Westminster’s Roman Catholic Archbishop (John Cardinal Heenan).
    —Jeff Ostrowski
    “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

Random Quote

“It is required of a man that he should share the passion and action of his time at peril of being judged not to have lived.”

— Oliver Wendell Holmes

Recent Posts

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  • “Thee” + “Thou” + “Thine”
  • PDF Download • “For Pentecost Sunday”
  • “Reminder” — Month of May (2026)
  • “Englished” Gregorian Chant • 5 Considerations

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