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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 · September 7, 2017

14th Sunday after Pentecost (2nd in September)

“Grant us, we beseech Thee, O Lord, that this saving Victim may become both the cleansing of our sins, and the propitiation of Thy might.”

Jeff Ostrowski · August 31, 2017

13th Sunday after Pentecost (1st in September)

“Having received Thy heavenly sacraments, O Lord, we beseech Thee that we may profit unto the increase of everlasting salvation…”

Jeff Ostrowski · August 30, 2017

Thoughts That Enter A Choirmaster’s Mind

A word about depression and discouragement.

Jeff Ostrowski · August 25, 2017

Very Great Mischiefs Which Arise From The Use Of Polyphony By Religious Orders (1610)

Fourth: musicians who beguile their way into religious orders are for the most part silly, idle, vacillating, vain, effeminate, and even vicious individuals.

Jeff Ostrowski · August 24, 2017

Musical Resources • 12th Sunday after Pentecost

“…and it chanced that a certain priest went down the same way, and seeing him, passed by.”

Jeff Ostrowski · August 22, 2017

Volunteer Choirs • Rehearsal “Tricks”

Only two people in the whole school are forced to publicly demonstrate their work: the choirmaster and the coach.

Jeff Ostrowski · August 18, 2017

PDF Download • “O Esca Viatorum”

I am deeply saddened that some people still don’t know where these items are located.

Jeff Ostrowski · August 18, 2017

Musical Resources • 11th Sunday after Pentecost 1

“After that He was seen by James, then by all the apostles.”

Jeff Ostrowski · August 14, 2017

Ordo Missæ from “People’s Mass Book” (1964)

Two words come to mind: inexplicable and bizarre.

Jeff Ostrowski · August 10, 2017

Musical Resources • 10th Sunday after Pentecost 1

“At that time, Jesus spoke this parable to some who trusted in themselves as just, and despised others…”

Jeff Ostrowski · August 8, 2017

Fr. Patrick T. Brannan, SJ • My Tribute

The cardinal was informed by ICEL: “There is no doubt that Father Brannan knows his Latin and Greek; but does he know English?”

Jeff Ostrowski · August 7, 2017

PDF Download • “Hymns Ancient & Modern”

Including a magnificent hymn for two voices (“Rex Sempiterne”) appropriate throughout the entire liturgical year.

Jeff Ostrowski · August 3, 2017

Telephone Conversation w/ Faculty

Re: 2017 Sacred Music Symposium

Jeff Ostrowski · August 2, 2017

Musical Resources • Feast of the Transfiguration

“…and Who didst wonderfully foreshow the perfect adoption of Thy children by a voice coming down in a shining cloud…”

Jeff Ostrowski · August 2, 2017

Chants for the Feast of the Transfiguration

Never have I encountered so many typos in one feast!

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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

“…I started down the road of the liturgy, and this became a continuous process of growth into a grand reality transcending all particular individuals and generations, a reality that became an occasion for me of ever-new amazement and discovery. The incredible reality of the Catholic liturgy has accompanied me through all phases of life, and so I shall have to speak of it time and again.”

— Joseph Cardinal Ratzinger

Recent Posts

  • “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)
  • Fulton J. Sheen • “24-Hour Catechism”
  • 2-Voice Arrangement for Lent

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