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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

Allowed or Forbidden? • Parallel Fourths in Renaissance Polyphony

Jeff Ostrowski · August 6, 2020

HOSE WHO CLICK on #79075 will find marvelous items. The first is a special “Mode 7” version of the MAGNIFICAT combining versions from Father Guerrero, Father Morales, and Palestrina. (All are seventh mode, so they mix together well.) The score helps singers understand that the Mode 7 plainsong appears in each voice elongated (“in augmentation”) depending upon the movement. (In the live recording below, the final movement is omitted). Not only that, but rehearsal videos for each individual voice are provided at #79075. On top of all that, two (2) YouTube videos containing a discussion about this marvelous “Guerrero+” composition are linked to.

Before Covid-19 hit, our choir was learning this Magnificat. Here’s a recording made during one of our rehearsals:

Disclaimer: The microphones cannot capture the true beauty of choral singing, just as a Postcard cannot capture the true beauty of a sunset.

In the section by Father Cristóbal de Morales, we find parallel fourths. (The same exact thing happens in measures 29-30.) See for yourself:

But are parallel fourths allowed in Renaissance polyphony?

The student of Father Morales was Father Guerrero (who turned out to be an even greater composer than his teacher). In Missa Beata Mater, Father Guerrero uses parallel fourths:

Please let me know your thoughts about parallel fourths in the Facebook combox. Thanks!

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

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Filed Under: Articles Tagged With: Catholic Composer Cristobal de Morales, Francisco Guerrero Composer, Giovanni Pierluigi da Palestrina Last Updated: August 6, 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

    PDF Download • “Offertory” for this Sunday
    This coming Sunday, 12 October 2025, is the 28th Sunday in Ordinary Time (Year C). Its OFFERTORY ANTIPHON (PDF) is gorgeous, and comes from the book of Esther, as did the ENTRANCE CHANT last Sunday. Depending on a variety of factors, various hand-missals (all with Imprimatur) translate this passage differently. For instance, “príncipis” can be rendered: King; Prince; Lion; or Fierce lord. None is “more correct” than another. It depends on what each translator wants to emphasize and which source text is chosen. All these pieces of plainsong are conveniently stored at the blue-ribbon feasts website.
    —Jeff Ostrowski
    Why A “Fugue” Here?
    I believe I know why this plainsong harmonizer created a tiny fugue as the INTRODUCTION to his accompaniment. Take a look (PDF example) and tell me your thoughts about what he did on the feast of the Flight of Our Lord Jesus Christ into Egypt (17 February). And now I must go because “tempus fugit” as they say!
    —Jeff Ostrowski
    “Reminder” — Month of October (2025)
    Those who don’t sign up for our free EMAIL NEWSLETTER miss important notifications. Last week, for example, I sent a message about this job opening for a music director paying $65,000 per year plus benefits (plus weddings & funerals). Notice the job description says: “our vision for sacred music is to move from singing at Mass to truly singing the Mass wherein … especially the propers, ordinaries, and dialogues are given their proper place.” Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski

Quick Thoughts

    New Bulletin Article • “12 October 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 12 October 2025) talks about an ‘irony’ or ‘paradox’ regarding the 1960s switch to a wider use (amplior locus) of vernacular in the liturgy.
    —Jeff Ostrowski
    “American Catholic Hymnal” (1991)
    The American Catholic Hymnal, with IMPRIMATUR granted (25 April 1991) by the Archdiocese of Chicago, is like a compendium of every horrible idea from the 1980s. Imagine being forced to stand all through Communion (even afterwards) when those self-same ‘enlightened’ liturgists moved the SEQUENCE before the Alleluia to make sure congregations wouldn’t have to stand during it. (Even worse, everything about the SEQUENCE—including its name—means it should follow the Alleluia.) And imagine endlessly repeating “Alleluia” during Holy Communion at every single Mass. It was all part of an effort to convince people that Holy Communion was historically a procession (which it wasn’t).
    —Jeff Ostrowski
    “Canonic” • Ralph Vaughan Williams
    Fifty years ago, Dr. Theodore Marier made available this clever arrangement (PDF) of “Come down, O love divine” by P. R. Dietterich. The melody was composed in 1906 by Ralph Vaughan Williams (d. 1958) and named in honor of of his birthplace: DOWN AMPNEY. The arrangement isn’t a strict canon, but it does remind one of a canon since the pipe organ employs “points of imitation.” The melody and text are #709 in the Brébeuf Catholic Hymnal.
    —Jeff Ostrowski

Random Quote

The literal translation: “Lord, have mercy—Christ, have mercy,” does not offer much material for an acceptable song text. The words, not having any feminine syllables, are abrupt; the sounds are almost all muted and colorless; the rhythmic flow is too brief. So many people may prefer responses that further extend the song of the assembly, e.g., “Have pity on us, Lord” or “Pardon us and change our hearts.

— J. Gelineau attacking the KYRIE ELEYSON (page 64 in “Learning to Celebrate,” 1985)

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