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Corpus Christi Watershed

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

Jeff Ostrowski • Article Archive

A theorist, organist, and conductor, Jeff Ostrowski holds his B.M. in Music Theory from the University of Kansas (2004). He completed studies in Education and Musicology at the graduate level. Having worked as a church musician in Los Angeles for ten years, in 2024 he accepted a position as choirmaster for Saint Mary of the Immaculate Conception in Michigan, where he resides with his wife and children. —Read full biography (with photographs).

Jeff Ostrowski · September 27, 2025

“Reminder” — Month of September (2025)

It’s my pleasure to remind you that…

Jeff Ostrowski · September 26, 2025

PDF Download • Communion (26th Sn. Ord.)

This Communion antiphon sparkles with beauty.

Jeff Ostrowski · September 25, 2025

PDF Download • “Hymn by Father Thomas à Kempis” (arranged for 2 voices)

For the upcoming feast on 9 November (which replaces the Sunday Mass).

Jeff Ostrowski · September 24, 2025

“Canonic” • Ralph Vaughan Williams

This is quite a clever arrangement of “Come down, O love divine.”

Jeff Ostrowski · September 22, 2025

Did they simplify these hymn harmonies?

Looking through a (Roman Catholic) German hymnal printed in 1952…

Jeff Ostrowski · September 22, 2025

Can You Identify This “Mystery” Hymn Tune?

Kevin Allen is currently in France.

Jeff Ostrowski · September 21, 2025

PDF Download • “Side-By-Side Comparison”

Re: the special hymn for the upcoming feast (9 November).

Jeff Ostrowski · September 20, 2025

PDF Download • Communion (25th Sn. Ord.)

This Communion antiphon glistens with resplendence!

Jeff Ostrowski · September 15, 2025

New Bulletin Article • “21 September 2025”

Those responsible for preparing parish bulletins may wish to…

Jeff Ostrowski · September 15, 2025

How do you pronounce this word in Latin?

Including a comparison chart (PDF) which many readers will appreciate.

Jeff Ostrowski · September 15, 2025

Cheap! Cheap! Cheap!

It’s always great to see old diocesan newspapers…

Jeff Ostrowski · September 15, 2025

PDF Download • Dom Murray Harmonies

Along with so many others, I have deep respect for Dom Gregory Murray as a composer.

Jeff Ostrowski · September 14, 2025

“Music List” • 14 September (Holy Cross)

Readers have expressed interest in examining the “music list” I prepared for 14 September.

Jeff Ostrowski · September 9, 2025

“Novus Ordo Parish … With Polyphony?” • Is that possible? How specifically does that work?

Many have asked: “Without getting fired, how can choirmasters introduce polyphony to the Ordinary Form?”

Jeff Ostrowski · September 8, 2025

New Bulletin Article • “14 September 2025”

Those responsible for preparing parish bulletins may wish to…

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Corpus Christi Watershed

President’s Corner

    💲 5.00 💵
    Our tiny 501(c)3 nonprofit organization exists solely by generous readers who donate $5.00 per month. We have no endowment; we have no major donors; we run no advertisements; we have no savings. A donor wrote to us: “I so appreciate all you do and have done, and your generosity is unprecedented. I am honored to be able to make a monthly contribution.” Another monthly donor says: “Thank you for everything CC Watershed does. We are able to add so much solemnity to Holy Mass due to the resources made available here.” Can you spare a few dollars each month to help us survive?
    —Corpus Christi Watershed
    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski

Quick Thoughts

    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
    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —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

To the extent that the new sacred music is to serve the liturgical celebrations of the various churches, it can and must draw from earlier forms — especially from Gregorian chant — a higher inspiration, a uniquely sacred quality, a genuine sense of what is religious.

— Pope John Paul II (June 1980)

Recent Posts

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  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”

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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.