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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 · November 22, 2016

Resplendent Christmas Piece for Two Voices!

This gem by Fr. Nicolas du Peron (d. 1963) incorporates Christmas carols in a most ingenious way.

Jeff Ostrowski · November 19, 2016

Fr. James Fryar, FSSP, on EWTN (16 November 2016)

How Much Do You Know About The Latin Mass?

Jeff Ostrowski · November 15, 2016

Did Pope Francis Denigrate “Rigid” Young Catholics?

If 500 people attend Mass and one acts as lector, there are still 499 people “not participating” by that flawed logic…

Jeff Ostrowski · November 14, 2016

Gorgeous Picture • “The Visitation”

Quite interesting, containing additional mysteries for those who look carefully…

Jeff Ostrowski · November 10, 2016

Musical Resources • 13 November (1962 Missal)

He said, “Make room there; for the girl is not dead, but sleepeth.” And they laughed Him to scorn.

Jeff Ostrowski · November 9, 2016

Complete “Ite Missa Est” for Parish Organist

Accompaniments by Achille P. Bragers (1887-1955).

Jeff Ostrowski · November 8, 2016

Do You Recognize This Hymn Tune?

The Brébeuf hymnal will include texts by contemporary Roman Catholic poets.

Jeff Ostrowski · November 8, 2016

Hysteria Over CDW Appointments?

Including two myths: one about the EF, and one about the OF.

Jeff Ostrowski · November 8, 2016

Do You Recognize This Hymn Tune? 1

The Brébeuf hymnal will include texts by contemporary Roman Catholic poets.

Jeff Ostrowski · November 4, 2016

Musical Resources • 6 November (Extraordinary Form)

“Grant that…through this sacrament which we have received, whatever is evil in our hearts may be restored by its gift of healing.”

Jeff Ostrowski · November 3, 2016

New Release! • “Dies Irae” Rehearsal Video

Also includes a printable score with literal English translation!

Jeff Ostrowski · November 1, 2016

“Sanctus” Recorded By Young Ladies From Las Vegas • Fabulous!

Palestrina cleverly interweaves an ancient hymn.

Jeff Ostrowski · October 30, 2016

“Kyrie VIII” Organ Accompaniment by Flor Peeters

…with the Solesmes markings.

Jeff Ostrowski · October 30, 2016

Musical Resources • Feast of Christ the King

“Ask of Me, and I will give thee the nations for thine inheritance…”

Jeff Ostrowski · October 24, 2016

“Pleni sunt coeli et terra gloria tua.”

Living in Los Angeles—what I miss most.

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    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

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

On 26 July 1916—during the German occupation of Belgium—a student choir led by Van Nuffel performed his setting of the psalm “Super flumina Babylonis” in Saint Rumbold’s Cathedral. The text and the musical setting very aptly expressed the depressed and rebellious mood of the population. The acclaim was enormous, and it laid the foundation for Van Nuffel’s formation of the Saint Rumbold’s choir.

— Unknown

Recent Posts

  • The Weekday Communions of Lent
  • PDF Download • “Atténde Dómine”
  • “Chant Is Not a Penitential Act” • Lenten Reflection by Daniel Marshall
  • (Ash Wednesday) • Medieval Illumination Depicting the Distribution of Ashes
  • Music List • (1st Sunday of Lent)

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