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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 · August 18, 2025

Now Online! • “Rare Latin + English Missal” (Burns and Oates, 1961) — 1,737 pages

One of the rarest (and most valuable) treasures our organization has ever made available.

Jeff Ostrowski · August 13, 2025

A Nice Hymn In Spanish

This honors the holy name of Jesus.

Jeff Ostrowski · August 12, 2025

Fulton J. Sheen • “Why Four Bishops Voted Against the Liturgical Constitution”

Including info Re: “emanations from penumbras.”

Jeff Ostrowski · August 11, 2025

“Music List” • 21st in Ordinary Time (Year C)

Readers have expressed interest in examining the “music list” I prepared for Sunday, 24 August.

Jeff Ostrowski · August 11, 2025

“Entrance Chant” • 21st Sunday Ordin. Time

This “Entrance Chant” is used during liturgical years A, B, and C.

Jeff Ostrowski · August 10, 2025

Do Protestants Have The Best Hymns?

“When we do this, we regard the congregation as unable to develop, as animals rather than human beings…” Professor László Dobszay

Jeff Ostrowski · August 6, 2025

“Music List” • 19th in Ordinary Time (Year C)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · August 6, 2025

This Sunday’s Communion Antiphon

If anyone can point to a similar example, please notify me.

Jeff Ostrowski · August 5, 2025

Using “Ye” Vs. “You” Correctly

Father Caraman was close friends with Monsignor Ronald Knox, Evelyn Waugh, and Sir Alec Guinness.

Jeff Ostrowski · August 4, 2025

“Pope Leo XIV Has Announced…”

My pastor asked me to write a column each week vis-à-vis sacred music and liturgy.

Jeff Ostrowski · August 2, 2025

“Chants” • 18th Sunday in Ordinary Time

The Communion chant is stunning.

Jeff Ostrowski · August 2, 2025

“Corn” From Heaven?

Some Americans believe the British version is always better.

Jeff Ostrowski · August 1, 2025

Gospel Acclamation Verses … Nowhere Assigned?

This is quite puzzling to me. Can anyone assist?

Jeff Ostrowski · July 21, 2025

“Music List” • 17th in Ordinary Time (Year C)

Readers have expressed interest in examining the “music list” I prepared for this coming Sunday.

Jeff Ostrowski · July 21, 2025

Flor Peeters In A Weird Mood?

What do you think of the dissonance on the chord I colored with pink?

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Corpus Christi Watershed

President’s Corner

    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
    PDF Download • “Hymn for 2 Voices”
    Readers who click on this video will see that it starts with verses of the “Pange Lingua” hymn by Saint Thomas Aquinas (d. 1274) arranged for two voices. However, there’s a polyphonic refrain (“Tantum Ergo”) for three voices, taken from Kevin Allen’s Motecta Trium Vocum. If your choir is very small, this piece is for you! You can download the PDF score free of charge—and you can also utilize the rehearsal videos for each individual voice—by navigating yourself to #20323.
    —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

“We turn to the East when we stand to pray, since this is where the sun and the stars rise. It is not, of course, as if God were there alone and had forsaken the rest of creation. Rather, when these earthly bodies of ours are turned towards the more excellent, heavenly bodies, our minds are thereby prompted to turn towards the most excellent being, that is, to our Lord.”

— Saint Augustine of Hippo

Recent Posts

  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”
  • (January 2026) • “Children Singing Plainsong”

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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.