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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 · June 24, 2020

PDF Download • “Saint Edmund Jennings Mass”

Today comes the third setting. A total of five Masses will be released.

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Jeff Ostrowski · June 23, 2020

More on the subject of “Mutual Enrichment”

My previous post on this subject was misunderstood in some quarters.

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Jeff Ostrowski · June 19, 2020

Important • Watershed Will Never Be The Same!

On the feast of the Sacred Heart, we present an important memorandum from Corpus Christi Watershed’s president.

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Jeff Ostrowski · June 18, 2020

“Society of Saint Bede” • Free Liturgical Resources

From what I can tell, the website has been around since 2012.

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Jeff Ostrowski · June 17, 2020

PDF Download • “Saint Anne Line Mass”

I will release five (5) Mass settings which come off well with a single cantor & organist; today is the 2nd installment.

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Jeff Ostrowski · June 16, 2020

How Good Are Your Musical Ears? • (Speedy Test)

Can you hear the difference between females and males?

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Jeff Ostrowski · June 12, 2020

Recorded Music At Mass?

Lorin Maazel was conducting major orchestras at the tender age of eight.

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Jeff Ostrowski · June 11, 2020

PDF Download • “Saint Ralph Sherwin Mass”

Over the next few weeks, I will release five (5) different Mass settings which can be sung with a single cantor & organist.

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Jeff Ostrowski · June 10, 2020

Organ Accompaniment • “Pater Noster” (in Latin)

In the Ordinary Form, the “Our Father” is sung by all present.

Jeff Ostrowski · June 10, 2020

Positive Message from a Catholic Priest

Today, we received this wonderful message from a Catholic Priest: I want to say thank you for everything you have done to bring back the sense of the sacred in The liturgy. We are going through a liturgical renewal here in the parish where I was assigned as a parochial vicar. I’ve only been a […]

Jeff Ostrowski · June 5, 2020

Pentecost Melody Added

Let it be known: I have added the Pentecost melody (“Veni Creator Spiritus”) to the Seasonal Benediction website. I am slowly adding all the different melodies for the “O Salutaris Hostia”—so we can be seasonally appropriate during Benediction of the Blessed Sacrament.

Jeff Ostrowski · June 4, 2020

PDF Download • 17 Organ Accompaniments for the simple “Salve Regina”

Potiron, Ostrowski, Bragers, Marier, Desrocquettes, Murray, and more!

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Jeff Ostrowski · June 1, 2020

This World Does Not Always Reward Virtue

Nor does this world always punish vice.

Jeff Ostrowski · May 27, 2020

Covid-19 • “A Word Of Encouragement”

Over these next few months, I want to try reach out to our readers.

Jeff Ostrowski · May 26, 2020

“Discussion” • Father Guerrero’s 7th Mode Magnificat

Before we began recording, the participants unanimously gave permission to post online.

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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

To end an impropriety, noticed particularly at orchestral Vespers, when two or three Psalms are sung with full orchestra, and then the other Psalms and the Hymn are rapidly hurried through with organ accompaniment only […] we order that at Mass all portions of the text, including “Agnus Dei,” be sung with orchestral accompaniment. […] Moreover, the musicians are not allowed to put the instruments away and leave their places before the conclusion of the sacred function.

— Cardinal Patrizi (18 November 1856)

Recent Posts

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  • The Weekday Communions of Lent
  • PDF Download • “Atténde Dómine”
  • “Chant Is Not a Penitential Act” • Lenten Reflection by Daniel Marshall

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