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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 · April 17, 2015

Reflections Upon The Death Of Francis Cardinal George This Morning At 10:45am

Someone told me in advance the cardinal was a trained musician; he certainly was!

Jeff Ostrowski · April 16, 2015

Is This The World’s Greatest Cry Room?

An usher approached me, tapping on my shoulder. This was the last straw.

Jeff Ostrowski · April 14, 2015

Should Church Singers Be Paid?

Practice Videos for KYRIE “Impleta Sunt”—based on a piece by Giovanni Pierluigi da Palestrina.

Jeff Ostrowski · April 13, 2015

Nixon, Watergate, & Singing The Mass Propers

Ehrlichman, Haldeman, Dean, Nixon, and others made tons of money writing and speaking about Watergate.

Jeff Ostrowski · April 13, 2015

Don’t Tell Me What You Can Do: Show Me

Directing a choir is extremely difficult. The obstacles often seem insurmountable.

Jeff Ostrowski · April 13, 2015

Cardinal Dolan Vested In Ferriola?

Can someone who knows about vestments confirm this?

Jeff Ostrowski · April 12, 2015

Musical Resources • Low Sunday (a.k.a. “Divine Mercy Sunday” or “Quasimodo” or “White Sunday”)

The organ is back!

Jeff Ostrowski · April 9, 2015

Easter Vigil Readings With Dancer • St. Patrick Catholic Church (Seattle, Washington)

I was surprised to see composer David Haas comment on facebook in support of this.

Jeff Ostrowski · April 9, 2015

First Look Images! • “Proper Of The Mass” By Fr. Samuel F. Weber

This 1,292 page book is much thinner than I had anticipated.

Jeff Ostrowski · April 8, 2015

Fascinating Videos From 1958 • Mass Sung In English!

A “Dialogue” Low Mass with singing (c. 1958) by choristers of St Mary’s Cathedral, Sydney.

Jeff Ostrowski · April 7, 2015

Photographs • FSSP Holy Triduum in Los Angeles (2015)

Notice how the priest, dressed in cope, is engulfed in darkness at the beginning of the Easter Vigil—except for candles burning.

Jeff Ostrowski · April 7, 2015

It Has Arrived! • “Proper of the Mass” (Ignatius)

You will notice that Fr. Weber’s version sounds quite similar to the authentic Latin chant.

Jeff Ostrowski · April 6, 2015

Can You Love Liturgy Too Much?

Should we assume malice on the part of those who denigrate the Traditional Mass?

Jeff Ostrowski · April 6, 2015

Jaw-Dropping Liturgical Manuscripts (7,055 Pages)

Catholics can now *see with their own eyes* the antiquity of our liturgy.

Jeff Ostrowski · April 4, 2015

Rough PDF • Rubrics & Music, Holy Saturday (1962)

I don’t usually release “rough cut” PDF files, but this one is so valuable…

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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

“Whether celebrated with priest and people facing each other or with priest and people together facing the same direction, every Eucharist is Christ coming to meet us, gracing us with a share in his own divine life.”

— Most Rev’d Arthur J. Serratelli (1 December 2016)

Recent Posts

  • 💲 5.00 💵
  • 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.