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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

“Benedictus” (Missa Iste Sanctus) • All voices recorded by Corrinne May

Jeff Ostrowski · December 21, 2021

OT LONG AGO, we spoke of the inscrutable decree by Bishop Robert E. Guglielmone, who declared that “the beauty of the Gregorian Chant” and a “sense of reverence” during the Holy Mass are “not consistent” with Vatican II. How can anyone believe such a claim? Vatican II said: “The musical tradition of the universal Church is a treasure of inestimable value, greater even than that of any other art” (SC §112). Vatican II said: “Choirs must be diligently promoted” (SC §114). Vatican II said: “the pipe organ is to be held in high esteem” (SC §120). Vatican II said: “The treasury of sacred music is to be preserved and fostered with great care” (SC §114).

Not Just Plainchant: Vatican II said Gregorian Chant must be given “first place” (SC §116) under ordinary circumstances, but also explicitly praised polyphony at Mass. Polyphony is the highest form of music, because each voice has its own melody. At the same time, thanks to the rules of counterpoint—which took hundreds of years to figure out—the independent melodies create harmony. In Masses by the great composers (such as Palestrina, Victoria, Morales, and Guerrero), the melodies themselves are based on Gregorian Chant, but sometimes the melodies are flipped upside down (inversion) or stretched out (augmentation).

They Could Not Kill This: The 20th century saw the decline of the arts, thanks to “sophisticated” avant-garde music.1 But polyphony survived, because sensible musicians realized it was the greatest music of all. Polyphony continued to be taught at secular universities, even by professors who (sometimes) were atheists! Regarding “contemporary” Catholic liturgical music—originally classified as The Hootenanny Mass—composer James MacMillan summarizes: “A lot of the favored new settings are musically illiterate, almost is if they were written by semi-trained teenagers, getting to grips with musical rudiments.” No serious conservatory would ever teach music by composers like David Haas, Rory Cooney, Marty Haugen, Michael Joncas, and Dan Schutte.

Another Reason: Polyphony also survived the “dark days” of the 1970s and 1980s because it’s an absolute delight to sing. The gorgeous lines by Father Francisco Guerrero practically sing themselves! And what a joy it is to work with fine singers! One of the greatest singers I know is my colleague, Corrinne May. She recently recorded all the voices for “Benedíctus Qui Venit” (Missa Iste Sanctus) by Father Guerrero. My singers really appreciate these rehearsal videos:

REHEARSAL VIDEOS for each individual voice and the (free) PDF score await you at #5305.

This “Benedictus” goes along with the SANCTUS and HOSANNA, which is #5454.

Rehearsal videos for the KYRIE (Missa Iste Sanctus) can be found at #5294

Rehearsal videos for the GLORIA (Missa Iste Sanctus) can be found at #5612

Rehearsal videos for the 5-voice AGNUS DEI (Missa Iste Sanctus) can be found at #5512


NOTES FROM THIS ARTICLE:

1   I can’t tell you about “avant-garde” music, because you won’t believe me. If I tell you composers wrote “music” which requires the pianist to fire a nuclear weapon into the audience, you won’t believe me. If I tell you composers wrote “music” which requires placing radios on the stage of Carnegie Hall and listening to static, you won’t believe me. If I tell you composers wrote “music” which requires the pianist to beat the piano strings with a dead fish, you won’t believe me. If I tell you composers wrote “music” which requires the audience to be placed on buses and taken around the city, you won’t believe me. But all those are examples of avant-garde music. There’s even a piece where the pianist just sits in front of the keyboard for 4 minutes and 33 seconds; and that is supposed to be “Classical Music.”

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

Filed Under: Articles, Featured Tagged With: Francisco Guerrero Composer, MISSA ISTE SANCTUS, Robert E Guglielmone Last Updated: December 26, 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 • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (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
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

At High Mass the Celebrant is not allowed to proceed with the Offertory while the “Credo” is being sung. Likewise he should not proceed with the Consecration until the singing of the “Sanctus” is completed.

— Father Carlo Rossini (1939)

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