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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 · July 4, 2015

Clarence Thomas: “I waited 25 years to return to the Church”

“Older people have an obligation not to spew their cynicism on our youth.” —Justice Thomas

Jeff Ostrowski · July 2, 2015

Annibale Bugnini’s Commentary (June 1967)

“The faithful everywhere have responded generously, and have greeted the new liturgy with great joy.” —Archbishop Bugnini (1967)

Jeff Ostrowski · July 1, 2015

Only Priests Can Save Catholic Music

Including thirteen (13) complete collections of Mass Propers…with audio examples!

Jeff Ostrowski · June 28, 2015

Loading Choir Binders In Los Angeles

I average one binder per second.

Jeff Ostrowski · June 26, 2015

Musical Resources • 5th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

Jeff Ostrowski · June 24, 2015

PDF Download • “Gloria In Excelsis” With 3-Voice Polyphony By Cristóbal De Morales

Could this have something to do with how each line comes through “cleanly” in 3-part music?

Jeff Ostrowski · June 24, 2015

Clearest Explanation Ever! —Bishop Gracida On Divorce & Remarriage For Catholics

“It is better to speak of a Declaration of Nullity rather than an Annulment…” —Most Rev. Gracida (1994)

Jeff Ostrowski · June 22, 2015

EWTN Classic • “Theology of Worship” with Fr. Robert Skeris (1998)

Mother Angelica sat down for a wonderful interview with a famous Theologian.

Jeff Ostrowski · June 22, 2015

Richard Rice • SATB Kyrie from Mass VIII

A luxuriant choral setting of the Kyrie from “Mass of the Angels”

Jeff Ostrowski · June 21, 2015

Musical Resources • 4th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

Jeff Ostrowski · June 17, 2015

Does Having Children Preclude Service As A Catholic Musician?

Here are some thoughts, but I can’t promise they make sense.

Jeff Ostrowski · June 17, 2015

SATB “Agnus Dei” by Verdelot with Rehearsal Videos

Who wouldn’t welcome a brief-but-beautiful piece like this?

Jeff Ostrowski · June 16, 2015

Top Six Liturgical Quotes By Robert Cardinal Sarah

Is the “Reform of the Reform” dead? Bishop Serratelli and many others disagree!

Jeff Ostrowski · June 12, 2015

Musical Resources • External Solemnity of the Sacred Heart (1962 Missal)

Some EF communities will celebrate the “External Solemnity” of the Most Sacred Heart on Sunday.

Jeff Ostrowski · June 10, 2015

Solesmes Monastery & Latin Accents

I suspect that in a long melisma it’s hard to know “where you are”…

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Corpus Christi Watershed

President’s Corner

    Music List • (2nd Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I created for this coming Sunday—1 March 2026—the 2nd Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the flourishing feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    Particularly Beautiful
    The 2nd Sunday of Lent has magnificent propers. Its INTROIT is particularly striking—using a haunting tonality—but the COMMUNION with fauxbourdon verses is also quite remarkable. I encourage all the readers to visit the feasts website, where the Propria Missae may be downloaded completely free of charge.
    —Jeff Ostrowski
    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski

Quick Thoughts

    Extreme Unction
    Those who search Google for “CCCC MS 079” will discover high resolution images of a medieval Pontificale (“Cambridge, Corpus Christi College, MS 079”). One of the pages contains this absolutely gorgeous depiction of the Sacrament of Extreme Unction.
    —Corpus Christi Watershed
    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

Why do we never sing “De Spiritu Sancto” (St. Athenogenes) in our churches? There are a dozen translations in English verse. Where could anyone find a better evening hymn than this, coming right down from the catacombs? Our hymnbooks know nothing of such a treasure as this, and give us pages of poor sentiment in doggerel lines by some tenth-rate modern versifier.

— Rev’d Adrian Fortescue (d. 1923)

Recent Posts

  • Music List • (2nd Sunday of Lent)
  • Particularly Beautiful
  • PDF Download • “Funerals in the Ordinary Form”
  • Extreme Unction
  • Which Mass?

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