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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 · October 16, 2024

Released! • Stellar Hymn We Just Recorded

The Tenor line is particularly pleasant, the way it rises with stepwise motion and then descends.

Jeff Ostrowski · October 16, 2024

Anybody Want This Prayer?

I posted this on social media. Tons of people requested a copy…

Jeff Ostrowski · October 15, 2024

“This Change Blew My Mind” • Confusion: Is 9 December 2024 a Holy Day of Obligation?

I just got off the phone with a very high ranking official at the USCCB…

Jeff Ostrowski · October 15, 2024

“Entrance Chant” • For Sunday (20-Oct-2024)

This one’s in Mode 3, imitating the authentic Gregorian chant.

Jeff Ostrowski · October 15, 2024

PDF Download • “Entrance Chant in English” (29th Sunday in Ordinary Time)

With a digression on a 1971 film called “Fiddler on the Roof.”

Jeff Ostrowski · October 14, 2024

When Liturgists Are Dopey

Jeff shares a ‘quick thought’ regarding the topic of the sacred liturgy.

Jeff Ostrowski · October 11, 2024

Music List • (28th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I’ve prepared for this coming Sunday.

Jeff Ostrowski · October 11, 2024

“Unsolved Mysteries” • What Happened To This Institute?

Dom Ermin Vitry, OSB, was in charge of building the pipe organ for the Cathedral of Saint Mary of the Immaculate Conception in Peoria, IL.

Jeff Ostrowski · October 10, 2024

PDF Download • “Entrance Chant in English” for the 28th Sunday in Ordinary Time (Year B)

This coming Sunday—13 October 2024—is the 28th in Ordinary Time.

Jeff Ostrowski · October 9, 2024

“Entrance Chant” • For Sunday (13-Oct-2024)

This one’s in Mode 3, imitating the authentic Gregorian chant.

Jeff Ostrowski · October 8, 2024

PDF Download • Choral Extension! • (Corresponding to the “Holy, Holy, Holy” of the Missal Chants)

Probably one of the most valuable PDF scores we’ve ever released.

Jeff Ostrowski · October 7, 2024

The End Is Coming!

I can’t help but wonder if this is…

Jeff Ostrowski · October 5, 2024

Music List • (27th Sund. Ordinary Time)

Readers have expressed interest in looking over the “music list” I have prepared for this coming Sunday.

Jeff Ostrowski · October 5, 2024

“In Feriis Per Annum” • Kýrie Eléison

For years I’d been meaning to harmonize the famous KYRIE SIMPLEX—but I never got the opportunity until today. Feel free to download the PDF score if you wish. It is “Kyrie XVI,” which in the old books bore the title In Feriis Per Annum.

Jeff Ostrowski · October 4, 2024

MONTH OF OCTOBER — “Reminder”

Since a new month has arrived, it’s my pleasure to remind you that…

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Corpus Christi Watershed

President’s Corner

    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st 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 outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    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

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

“Père Joseph Gelineau represented everything that had gone wrong with the Church since the new liturgists had gained control.”

— Jean Langlais

Recent Posts

  • Music List • (1st Sunday of Lent)
  • Fulton J. Sheen • “24-Hour Catechism”
  • 2-Voice Arrangement for Lent
  • Pope Paul VI • “Sacrificium Laudis” (15 Aug 1966)
  • “Sanctus VIII” • Organ Accompaniment

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