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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 27, 2020

Sister Goodchild • “Gregorian Chant for Church and School”

This 130-page book can be downloaded for free.

Jeff Ostrowski · June 26, 2020

Note from a reader (25 June 2020)

“Just visited your website for the first time 5 minutes ago. Was that struck by the beauty of the chant and the immense gift of such a beautiful collection that can be downloaded with ease…at no charge! In awe of the gift of this extensive content and the amount of labor that has gone into […]

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.

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Corpus Christi Watershed

President’s Corner

    Season’s End Repertoire
    Looking at the REPERTOIRE SHEET until the end of the choral season, I see that I’ve fallen behind schedule. (The last three months have been extraordinarily busy.) As you know, I have been providing organ harmonies for all the ENTRANCE CHANTS—as well as rehearsal videos—and you can see I’m behind where I planned to be. Now I must make up lost ground. However, the choir picks up the ENTRANCE CHANT with ease, so I’m sure it will all work out. My ‘unofficial’ harmonizations are being posted each week at the flourishing feasts website.
    —Jeff Ostrowski
    PDF Download • “Funeral Procession”
    From a mediæval Book of Hours, I was sent this glorious depiction of a Roman Catholic funeral procession by Simon Bening (d. 1561). The image resolution is extremely high. I’m not sure I know of a more beautiful illustration of a mediæval church. And I love how the servers are wearing red and pink cassocks!
    —Jeff Ostrowski
    Simplified Accomp. • Schubert’s “Ave Maria.”
    Sometimes the organist must simultaneously serve as the CANTOR. (Those who work in the field of church music know exactly what I’m talking about.) One of our contributors composed this simplified keyboard accompaniment for Franz Schubert’s “Ave Maria,” a piece which is frequently requested for Catholic funerals and weddings. In terms of the discussion about whether that piece is too theatrical (‘operatic’) for use in Church, I will leave that discussion to others. All I know is, many church musicians out there will appreciate this simplified version.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski

Random Quote

“In the Latin Church the pipe organ is to be held in high esteem, for it is the traditional musical instrument which adds a wonderful splendor to the Church’s ceremonies and powerfully lifts up man’s mind to God and to higher things.”

— Vatican II Council

Recent Posts

  • “Translating the Bible” • Msgr. Ronald Knox (1953)
  • Season’s End Repertoire
  • PDF Download • “Funeral Procession”
  • Re: The “Correct” Way To Sing Gregorian Chant
  • PDF Download • Ascension “Entrance Chant”

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