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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 · February 28, 2016

Catholic Hymns Before Vatican II Will Shock You!

In spite of what you may have read online, hymns in English were often sung during Low Mass.

Jeff Ostrowski · February 23, 2016

Rehearsal Videos • A Resplendent “Agnus Dei” You’ve Never Heard

Can you hear the Canon between Soprano & Tenor?

Jeff Ostrowski · February 22, 2016

PDF Download • “Latin in the New Liturgy” (1976)

“The use of Latin in celebrating the new Mass Rite will be encouraged as it has been in the old; Latin expresses the nature of the Church as international and timeless.”

Jeff Ostrowski · February 20, 2016

Funeral Mass • Justice Antonin Scalia

You can download the program or view the full Mass online.

Jeff Ostrowski · February 20, 2016

A Roman Catholic Cleric’s Noble Robes

The Archbishop of Kraków was (for a short time) Senator of the Second Polish Republic.

Jeff Ostrowski · February 18, 2016

PDF • Two Nice Versions of “Attende Domine”

A good piece for Lent.

Jeff Ostrowski · February 16, 2016

Something That Would Fix So Much … But Nobody Mentions It

Is this “tacit” approval really “imaginary” approval?

Jeff Ostrowski · February 15, 2016

“Credo for Two Voices” • Gustaaf Nees (d. 1965)

This simple setting of Gregorian Credo IV uses organ, men’s voices, and women’s voices.

Jeff Ostrowski · February 14, 2016

Musical Resources • 1st Sunday of Lent (EF)

“We solemnly offer the sacrifice at the beginning of Lent, O Lord…”

Jeff Ostrowski · February 14, 2016

Canon Van Nuffel’s Setting Of Smoke Rising

“Smoke rises from the Mountain of Doom. The hour grows late, and Gandalf the Grey rides to Isengard seeking my counsel.”

Jeff Ostrowski · February 12, 2016

Motet • “Verbum Supernum” by Fr. Carlo Rossini

This SATB setting can be used during any liturgical season and has “O Salutaris Hostia” as one of its verses.

Jeff Ostrowski · February 11, 2016

“Audi Benigne Conditor” • Gregorian Hymn For Lent

The text is by St. Gregory the Great, who was Pope from 590-604.

Jeff Ostrowski · February 10, 2016

Decapitation of an Innocent Meadowlark

Do we remember that people in the pews often lack our musical background?

Jeff Ostrowski · February 9, 2016

Francisco Guerrero • “Hymn To The Sacred Trinity” (SATB with Plainsong)

Are you up for a special hymn challenge?

Jeff Ostrowski · February 8, 2016

What Are You Doing For Lent?

“The phone is our century’s plague. It destroys character, interaction, friendships, families, and our time. We are glued to these devices.”

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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

    “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

“It is most important that when the faithful assist at the sacred ceremonies … they should sing alternately with the clergy or the choir, as it is prescribed.”

— ‘Pope Pius XI, Divini Cultus (20 Dec 1928) §9’

Recent Posts

  • “Reminder” — Month of Febr. (2026)
  • Seminary Music Directors Gather in Houston
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  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”

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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.