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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 · March 12, 2016

PDF Download • Spanish Cathedral Music (1961)

“On Holy Saturday in 1545, while the pope and several cardinals were present, two of the oldest choir members flew at each other during the blessing of the new oils…”

Jeff Ostrowski · March 12, 2016

Suzanne Toolan • Missing Verse From “I Am The Bread Of Life” Hymn

Is this for real?

Jeff Ostrowski · March 8, 2016

Undoing A “Wreckovation” Is Possible

A positive church transformation!

Jeff Ostrowski · March 7, 2016

PDF Download • “New Westminster Hymnal” (1939)

Can Watershed survive? (Part 4)

Jeff Ostrowski · March 5, 2016

“Ave Maris Stella” • Take II

Have you ever changed your mind with regard to tempo?

Jeff Ostrowski · March 3, 2016

Rehearsal Videos • My Favorite Lenten Hymn

Can Watershed survive? (Part 3)

Jeff Ostrowski · March 2, 2016

PDF Download • “Woodward Hymnal” (1913) … Outrageously Rare!

Can Watershed survive? (Part 2)

Jeff Ostrowski · March 1, 2016

| Part 1 of 3 | • “Kyrie Eleison” (SATB) within the reach of any choir!

Can Watershed survive? (Part 1)

Jeff Ostrowski · February 28, 2016

Musical Resources • 3rd Sunday of Lent (EF)

“…free us from all sins and dangers, as Thou dost grant us to be sharers in this great mystery…”

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.

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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

Palestrina wrote two Masses in honor of the Blessed Virgin—one “a 6” before the Council of Trent, consequently with the tropes, and first published in 1570. In 1599 it was republished in Palestrina “Missarum Liber III” with the tropes removed, and in their place the liturgical words of the “Gloria” reiterated.

— Henry Coates

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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