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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 17, 2015

Musical Resources • 21st Sunday after Pentecost (Extraordinary Form)

“…in Thine infinite mercy, O Lord, restore our souls to health…”

Jeff Ostrowski · October 17, 2015

Yikes! Even The Monastery Of Solesmes

Did you notice how they carefully deleted all the beautiful artwork?

Jeff Ostrowski · October 16, 2015

Watershed Needs Your Help To Continue!

“Watershed has been extremely helpful and has brought so much solace and support…”

Jeff Ostrowski · October 15, 2015

What? Sundays after Pentecost?

Be careful this year.

Jeff Ostrowski · October 14, 2015

When Choirmasters Despair

No matter how superb your music program is…

Jeff Ostrowski · October 11, 2015

Kyrie XI • Gregorian Chant

I’ve wrongly neglected this famous chant.

Jeff Ostrowski · October 10, 2015

The Week In Review

Seven random thoughts…

Jeff Ostrowski · October 10, 2015

Musical Resources • 20th Sunday after Pentecost (Extraordinary Form)

“May these mysteries, we beseech thee, O Lord, bring us from heaven a healing medicine…”

Jeff Ostrowski · October 7, 2015

Sloppy 1953 Schwann

The “white notes” (as Dr. Joseph Lennards called them) are quite sloppy, which really took me by surprise.

Jeff Ostrowski · October 3, 2015

Loading Choir Binders For Sunday (4 October)

The life of a choirmaster is a life of sacrifice…

Jeff Ostrowski · October 3, 2015

Worst Song Ever?

What Church musicians can learn from “Friday” by Rebecca Black.

Jeff Ostrowski · October 1, 2015

Musical Resources • 19th Sunday after Pentecost (Extraordinary Form)

“Almighty and merciful God, in thy goodness put far from us all that may work us harm…”

Jeff Ostrowski · September 28, 2015

PDF Download • Extremely Rare Hymnal (1952)

Published by the Catholic Choirmasters’ Guild of Buffalo, New York.

Jeff Ostrowski · September 26, 2015

Fr. David Friel & Pope Francis

A friend kindly sent me these photos…

Jeff Ostrowski · September 24, 2015

Musical Resources • 18th Sunday after Pentecost (Extraordinary Form)

“In thy tender mercy, guide aright, we beseech thee, O Lord, our hearts…”

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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

“If I could only make the faithful sing the Kyrie, the Gloria, the Credo, the Sanctus, and the Agnus Dei…that would be to me the finest triumph sacred music could have, for it is in really taking part in the liturgy that the faithful will preserve their devotion. I would take the Tantum Ergo, the Te Deum, and the Litanies sung by the people over any piece of polyphony.”

— ‘Giuseppe Cardinal Sarto, Letter to Msgr. Callegari (1897)’

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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