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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

Huge Announcement! • “Three Voiced Polyphony”

Jeff Ostrowski · October 19, 2021

IFTEEN YEARS AGO, on the feast of Father John Brébeuf—19 October 2006—the Secretary of State granted us recognition as a 501(c)3 public charity in Texas. With gratitude to our Redeemer on our fifteenth anniversary, I’m thrilled to make a huge announcement. A magnificent collection we commissioned for three-part choirs (Soprano, Alto, Bass) can now be purchased directly from Amazon, and we have greatly reduced the price. Depending on how the psalm verses are sung—a decision left to each choirmaster—these pieces can be as long or short as necessary to match the liturgical action. If your choir has more females than males, this collection will thrill you—because all the pieces are written for SAB!

*  MATRI DIVINAE GRATIAE • Purchase this book!
$8.99 per copy • Eligible for Amazon Prime! • 44 pages.

Click here to download a sample page.

Contemporary Harmonies: Composer Kevin Allen has produced a true masterpiece, make no mistake about it. Some of these pieces are somber and stately. An example would be “Aufer A Me,” and observe how each voice enters on a different scale degree—a superb touch! One way to find out whether a composition is excellent is to take away one or more voices and examine the result. Mr. Allen’s creation certainly passes that test with flying colors, as you can see by listening to a version missing one voice (i.e. with one voice removed). The result is both interesting and pleasing. This is contemporary music, so the “RRR” (Rigid Renaissance Rules) are not followed…yet each voice is eminently singable—an absolute joy!

Rehearsal videos for each individual voice:
“Aufer A Me” • SOPRANO • ALTO • BASS

Small Groups: Some of the pieces are extremely bright—and the following example demonstrates that—and they are very “tuneful” or “catchy.” Once these pieces get into your head, they won’t leave! And that’s okay, because the sacred liturgy is supposed to be something in which we take delight. They sound very good sung by even a handful of singers. Below is a live recording from our 9:00am Sunday Mass—which is sung by a very small group of singers:

Large Groups: On the other hand, these piece sound absolutely spectacular when they are sung by a large group of singers. By the way, in terms of the layout (which includes solfège markings), few books compare in elegance to Matri Divinae Gratiae. Below is live recording from our 11:00am Sunday Mass—which is sung by a large group of volunteer singers:

Rehearsal videos for each individual voice:
“Quam Dilecta” • SOPRANO • ALTO • BASS

This 44-page collection contains:

1. QUAM DILECTA |+ Psalm verses
2. JUSTORUM ANIMAE |+ Psalm verses
3. ERIPE ME |+ Psalm verses
4. SI AMBULAVERO |+ Psalm verses
5. MEMENTO VERBI |+ Psalm verses
6. AUFER A ME + Psalm verses

Supporting The Composer: This collection was commissioned by CORPUS CHRISTI WATERSHED and published in September of 2016. In accordance with our customs, all proceeds which exceed production costs (printing, shipping, and so forth) go directly to the Catholic artist, who maintains copyright. Therefore, when you purchase these books, you are directly supporting Roman Catholic artists who produce works for the Church. We are a 100% volunteer organization.

Complete Title:   Matri Divinae Gratiae, Opus Mariae Dedicatum

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

Filed Under: Articles, Featured Tagged With: 3-part SAB motets, Easy Polyphony For Amateurs, Matri Divinae Gratiae, Motets for Three-Part Choir, Polyphony For Three Voices Last Updated: October 25, 2021

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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

“We must remember that the important elements of a rite are not the things that will first be noticed by a casual and ignorant onlooker—the number of candles, colour of the vestments and places where the bell is rung—but just those things he would not notice: the Canon, fraction and so on, the prayers said in a low voice and the characteristic but less obvious rites done by the celebrant at the altar.”

— Fr. Fortescue explaining that Anglicanism does not preserve Sarum

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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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.