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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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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 · November 25, 2017

PDF Download • “Evening Masses and Days of Obligation” (58 pages)

Permission has been given to post this marvelous 2016 dissertation by Fr. Shawn Tunink.

Jeff Ostrowski · November 24, 2017

“Simultaneous Fulfillment” of Mass Obligation?

Christmas falls on a Monday this year—but documentation shows “double dipping” is forbidden.

Jeff Ostrowski · November 20, 2017

PDF Download • Authentic Irish Hymnal (164 pages)

Imagine the amount of time required to typeset something like this!

Jeff Ostrowski · November 20, 2017

Pleni sunt coeli et terra gloria tua…

“The heavens and the earth proclaim thy glory…”

Jeff Ostrowski · November 17, 2017

Choir Members Photograph

Do you take pictures of your choir? Photographs can serve as nice reminders of wonderful experiences.

Jeff Ostrowski · November 16, 2017

A Hymn That Just Keeps Popping Up

Bach’s music inhabits “a still and serious world…without color, without light, without motion” from which we cannot break away.

Jeff Ostrowski · November 16, 2017

“23rd” {repeat} Sunday after Pentecost (3rd in November)

“…and without parables He did not speak to them; that it might be fulfilled which was spoken by the prophet, saying, I will open my mouth in parables, I will utter things hidden from the foundation of the world.”

Jeff Ostrowski · November 15, 2017

The Man Who Thrice Rejected Knighthood

Excerpt from a documentary on “St. Thomas More” (Paul Scofield) which in 1966 won six Oscars at the Academy Awards.

Jeff Ostrowski · November 13, 2017

SATB “Alleluia” (Fr. Morales) • for both OF and EF

This piece is perfect for “stealthily” adding polyphony to the Ordinary Form.

Jeff Ostrowski · November 10, 2017

Fulton J. Sheen • “Hints On Public Speaking”

We choirmasters are frequently called upon to speak in public.

Jeff Ostrowski · November 9, 2017

Image • Francisco Guerrero (d. 1599)

It’s based on Pacheco’s version, created the year Guerrero died.

Jeff Ostrowski · November 9, 2017

23rd Sunday after Pentecost (2nd in November)

“Amen I say to you, whatsoever, you ask when you pray, believe that you shall receive, and it shall be done to you.”

Jeff Ostrowski · November 7, 2017

New English Hymnal • Voice-Leading

Constant critics are corrosive.

Jeff Ostrowski · November 6, 2017

6 Suggestions • “Promoting The Latin Mass”

Msgr. Charles Pope has several sagacious suggestions!

Jeff Ostrowski · November 6, 2017

Archbishop Sheen Played The Organ!

Sheen told Ferris that he wanted a classical repertoire at the cathedral in Rochester, including Gregorian chant.

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Corpus Christi Watershed

President’s Corner

    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski
    “Sanctus VIII” • Organ Accompaniment
    A few days ago, I composed this organ harmonization for SANCTUS VIII. This Mass is traditionally called Missa de ángelis or “Mass of the angels.” In French, it is Messe de Anges. You can evaluate my attempt to simultaneously accompany myself on the pipe organ (click here) while singing the melody. My parish is currently singing this setting.
    —Jeff Ostrowski
    Music List • (5th Sund. Ordinary Time)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for this coming Sunday, 8 February 2026, which is the 5th Sunday in Ordinary Time (Year A). If such a thing interests you, feel free to download it as a PDF file. You will probably notice it isn’t as ‘complete’ or ‘spiffy’ as usual, owing to some difficulties which took place this week.
    —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

“As liturgical art, church music is obliged to conform to ecclesiastical law. But to construct artificial polarities here, between legalistic order and a dynamic church music, demanded by the alleged needs of the day, would be to forsake the foundation of a music rooted in liturgical experience. What is in fact the pastoral value of the shoddy, the profane, the third-rate?”

— Dr. Robert Skeris (1996)

Recent Posts

  • Fulton J. Sheen • “24-Hour Catechism”
  • 2-Voice Arrangement for Lent
  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment
  • PDF Download • Sanctus VIII Organ Accompaniment (“Mass of the Angels”)

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