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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

PDF Download • “Credo III + Polyphonic Extension”

Jeff Ostrowski · January 17, 2024

OR MANY YEARS, I had no idea how to use the Gregorio software (a.k.a. “GABC”) to instantly create plainsong scores on the computer. When I couldn’t take it anymore, I called up a friend and paid him $150 to teach me over the telephone. I was able to learn only with assistance from a living, breathing human being. Thanks to his assistance, I can now create Gregorian Chant scores with ease. That $150 was not wasted. Some things in life (in my humble opinion) cannot be learned from books—and that’s why I recently recorded a special seminar: Secrets of the Conscientious Choirmaster.

Contrafactum • Nothing is hard if you know how to do it. Men who spent their entire lives tinkering with automobiles and tractors have no problem repairing cars—because they know what to do! In my seminar, I give away secrets I’ve picked up over the last 25 years (working with hundreds of singers across the United States). One technique I really “hammer” or “emphasize” or “highlight” is that of CONTRAFACTUM. I don’t see how anyone could run a choral program without it. Mozart used it. Handel used it. Bach used it. Even Father Cristóbal de Morales (d. 1553) used CONTRAFACTUM when he wrote alternate movements for his magnificent Missa Mille Regretz.

Choral Extensions • I also delve into the concept of “choral extensions” during my seminar. To give you an example, yesterday afternoon I quickly threw together—thanks to the Missa Mille Regretz by Father Cristóbal de Morales—a “polyphonic extension” using CREDO III:

*  PDF Download • “CREDO III + Polyphonic Extension”
—Using Missa Mille Regretz by Father Cristóbal de Morales.

What We Did • Several of my choir members helped me record it—so you can get a rough idea how the “choral extension” sounds:

Free rehearsal videos for each individual voice await you at #34648.

Jeff’s Sadness:

Free rehearsal tracks for each individual voice are available at that link, but most readers won’t click on it—and that makes me feel depressed. They take forever to create, but the choirmasters who utilize them testify they’re worth their weight in gold.

P.S.
Father Morales does some nifty things in that polyphonic “Et Incarnatus Est.” You can learn more if you watch the INTRODUCTION (51 minutes) which is available free of charge.

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

Filed Under: Articles, Featured, PDF Download Tagged With: Creating Gregorian Chant GABC, GABC Gregorian Chant, Gregorio (software), Gregorio Computer Plainsong, Gregorio Fonts Plainchant, Missa Mille Regretz, Polyphonic Credo Extensions Last Updated: January 17, 2024

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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

    New Bulletin Article • “21 September 2025”
    My pastor requested that I write short articles each week for our parish bulletin. Those responsible for preparing similar write-ups may find a bit of inspiration in these brief columns. The latest article (dated 21 September 2025) discusses some theological items—supported by certain verses in ancient Catholic hymns—and ends by explaining why certain folks become delirious with jealousy when they observe feats by Monsignor Ronald Knox.
    —Jeff Ostrowski
    Cheap! Cheap! Cheap!
    It’s always amusing to see old diocesan newspapers—in huge capital letters—advertising the Cheapest Catholic Paper in the United States. The correspondent who sent this to me added: “I can think of certain composers, published by large companies in our own day, who could truthfully brag about the most tawdry compositions in the world!” I wonder what she could have meant by such a cryptic comment…
    —Jeff Ostrowski
    PDF Download • Dom Murray Harmonies
    Along with so many others, I have deep respect for Dom Gregory Gregory Murray, who produced this clever harmonization (PDF) of “O SANCTISSIMA.” It’s always amazed me that Dom Gregory—a truly inspired composer—was so confused when it came to GREGORIAN CHANT. Throughout his life, he published contradictory statements, veering back-and-forth like a weather vane. Toward the end of his life, he declared: “I see clearly that the need for reform in liturgical music arose, not in the 18th and 19th centuries, but a thousand years earlier—in the 8th and 9th centuries, or even before that. The abuses began, not with Mozart and Haydn, but with those over-enthusiastic medieval musicians who developed the elaborate and flamboyant Gregorian Chant.”
    —Jeff Ostrowski

Quick Thoughts

    Karl Keating • “Canonization Questions”
    We were sent an internet statement (screenshot) that’s garnered significant attention, in which KARL KEATING (founder of Catholic Answers) speaks about whether canonizations are infallible. Mr. Keating seems unaware that canonizations are—in the final analysis—a theological opinion. They are not infallible, as explained in this 2014 article by a priest (with a doctorate in theology) who worked for multiple popes. Mr. Keating says: “I’m unaware of such claims arising from any quarter until several recent popes disliked by these Traditionalists were canonized, including John XXIII, Paul VI, and John Paul II. Usually Paul VI receives the most opprobrium.” Mr. Keating is incorrect; e.g. Father John Vianney, several centuries ago, taught clearly that canonizations are not infallible. Archbishop Fulton J. Sheen would be another example, although clearly much more recent than Saint John Vianney.
    —Corpus Christi Watershed
    Vatican II Changed Wedding Propers?
    It’s often claimed that the wedding propers were changed after Vatican II. As a matter of fact, that is a false claim. The EDITIO VATICANA propers (Introit: Deus Israel) remained the same after Vatican II. However, a new set of propers (Introit: Ecce Deus) was provided for optional use. The same holds true for the feast of Pope Saint Gregory the Great on 3 September: the 1943 propers (Introit: Si díligis me) were provided for optional use, but the traditional PROPRIA MISSAE (Introit: Sacerdótes Dei) were retained; they weren’t gotten rid of. The Ordo Cantus Missae (1970) makes this crystal clear, as does the Missal itself. There was an effort made in the post-conciliar years to eliminate so-called “Neo-Gregorian” chants, but (contrary to popular belief) most were retained: cf. the feast of Christ the King, the feast of the Immaculate Conception, and so forth.
    —Corpus Christi Watershed
    Solemn “Salve Regina” (Chant)
    How many “S” words can you think of using alliteration? How about Schwann Solemn Salve Score? You can download the SOLEMN SALVE REGINA in Gregorian Chant. The notation follows the official rhythm (EDITIO VATICANA). Canon Jules Van Nuffel, choirmaster of the Cathedral of Saint Rumbold, composed this accompaniment for it (although some feel it isn’t his best work).
    —Corpus Christi Watershed

Random Quote

“Angularis fundamentum” is typically sung at the dedication or consecration of a church and on church anniversaries. For constructions too numerous to list in recent generations, it would be more appropriate to sing that Christ had been made a temporary foundation. A dispirited generation built temporary housing for its Lord, and in the next millnenium, the ease of its removal may be looked back upon as its chief virtue.

— Fr. George Rutler (2016)

Recent Posts

  • New Bulletin Article • “21 September 2025”
  • How do you pronounce this word in Latin?
  • Cheap! Cheap! Cheap!
  • Children’s Repertoire: “3 Recommendations”
  • PDF Download • Dom Murray Harmonies

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