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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 4, 2015

PDF Download: Organ Accompaniment to “Et Valde Mane” • 1955 Easter Vigil

A thing desired by many!

Jeff Ostrowski · April 3, 2015

Rubrics • Good Friday (Pius XII Holy Week Revisions)

Even Solesmes makes errors from time to time.

Jeff Ostrowski · April 2, 2015

An Essential & Unique Thing For Holy Thursday

…and a look at Holy Thursday from the 1965 Missal.

Jeff Ostrowski · April 1, 2015

Judas Iscariot & Religious Freedom

Some have criticized Christ for making Judas part of his special group of friends.

Jeff Ostrowski · April 1, 2015

Musical Resources • Holy Thursday (1962)

Bells are rung and the organ played at the “Gloria”—but then stay silent until the Easter Vigil “Gloria.”

Jeff Ostrowski · March 31, 2015

What Happened To Our Catholic Artists?

From what I can tell, a trend toward *ugly* artwork in Church publications began in the late 1950s.

Jeff Ostrowski · March 30, 2015

Is This Where It All Began?

Why do so many traditional priests have an aversion to Pope Pius XII’s revision of Holy Week?

Jeff Ostrowski · March 29, 2015

Palm Sunday Outline • Extraordinary Form

During the procession, all or some of the following selections may be sung…

Jeff Ostrowski · March 29, 2015

Musical Resources • Palm Sunday (1962)

There are two ways to distribute palm branches in the Extraordinary Form.

Jeff Ostrowski · March 26, 2015

Diversity Of Thought

When it comes to reforming the liturgy, they want “all voices heard.”

Jeff Ostrowski · March 26, 2015

“O Sacred Head Surrounded”

An easier organ accompaniment, provided by Dr. Eugène Lapierre, teacher of Roger Wagner.

Jeff Ostrowski · March 25, 2015

Free PDF • Polyphonic Gloria With Practice Videos

Uses Gregorian chant with polyphonic _Falsibordone_ by Caesare de Zachariis (†1594).

Jeff Ostrowski · March 25, 2015

Video • Vocation Story Of Bishop Robert C. Morlino

“Scranton is a very Catholic town. Every guy, growing up considered the priesthood.” —Bishop Morlino

Jeff Ostrowski · March 24, 2015

Do You Know The Hymn Of Saint Casimir?

The *original* meter & rhyme scheme were miraculously kept in English, Polish, Greek, French, Spanish, Italian, and Hungarian!

Jeff Ostrowski · March 22, 2015

Musical Resources • 5th Sunday of Lent “Passion”

The “Gloria Patri” is not said at the Introit from this day until Easter Sunday, except on Feasts.

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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

“The Humanists abominated the rhythmical poetry of the Middle Ages from an exaggerated enthusiasm for ancient classical forms and meters. Hymnody then received its death blow as, on the revision of the Breviary under Pope Urban VIII, the medieval rhythmical hymns were forced into more classical forms by means of so-called corrections.”

— Father Clemens Blume, S.J.

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.