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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 · December 22, 2023

“Not Schmaltzy” • An Ancient Christmas Hymn

Sharing one’s opinions candidly is a quick way to make lifelong enemies.

Jeff Ostrowski · December 20, 2023

How To Contact Corpus Christi Watershed

We thought you might enjoy reading messages we’ve received over the last few weeks.

Jeff Ostrowski · December 18, 2023

“Liber Usualis” • Jeff’s Proposed Modifications

In 1957, the Abbey of Solesmes publicly claimed copyright over “the rhythmic signs 𝗮𝗻𝗱 𝘁𝗵𝗲 𝗿𝗵𝘆𝘁𝗵𝗺 𝘁𝗵𝗲𝘆 𝗿𝗲𝗽𝗿𝗲𝘀𝗲𝗻𝘁.”

Jeff Ostrowski · December 16, 2023

Our Most Popular Download Ever? • (Advent Hymn)

The more I argued, the more Kenneth insisted that none of my objections were valid…

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Jeff Ostrowski · December 15, 2023

Mandatory Advent Piece

Last Sunday, our volunteer choir sang “the mandatory piece” for ADVENT in these United States. Anyone interested can listen to the ‘live’ recording. The claim is sometimes made (erroneously) that this piece can be sung only during the final days of ADVENT. Such an assertion demonstrates a misunderstanding of where this piece came from and […]

Jeff Ostrowski · December 14, 2023

“Silent Night” • Easy Organ Arrangement

Here’s a handy organ accompaniment (PDF) in three different key signatures: MIDDLE, HIGH, and LOW. The Latin lyrics (“Silens Nox”) are courtesy of Father Valentine Young, OFM (d. 2020). The organ harmonies are very simple, yet beautiful. Those who desire such a thing may also download a Singer’s Version. Choirs will ‘pick up’ this piece […]

Jeff Ostrowski · December 13, 2023

Do You Recognize This Melody?

This morning, I attempted to record a hymn called BRISTOL. Click here to listen to what I produced. I’m trying to provide PIPE ORGAN RECORDINGS for any Brébeuf hymns which don’t (yet) have a choral recording. Thousands of rehearsal videos have been added—by real human voices—but there’s still more work to do. I know very […]

Jeff Ostrowski · December 12, 2023

PDF Download • “Münster Hymnal” (Harmony Edition) — 123 pages!

“As the organ plays, so does the congregation sing!” —From the Foreword

Jeff Ostrowski · December 12, 2023

“PPG” • Plainsong Progress by Girls

You can listen to this ‘live’ recording of females singing the INTROIT (“Pópulus Sýon”) last Sunday, which was the Second Sunday of Advent. I accompanied them softly on the pipe organ. I would like to remind everyone who listens: 100% of the singers in my choir are volunteers recruited from the congregation. Indeed, the two […]

Jeff Ostrowski · December 10, 2023

New Hymn By Father Dylan Schrader

That’s not an easy hymn to sing 𝘢 𝘤𝘢𝘱𝘱𝘦𝘭𝘭𝘢 but my volunteer choir attempted it. If you think it’s easy, please send me a recording of your choir singing it!

Jeff Ostrowski · December 6, 2023

(Advent, 2nd Sunday) • Introit “Pópulus Sion” Sung According to the Official Rhythm

We can hardly do better than to join in the same melodies sung by Catholic saints throughout history.

Jeff Ostrowski · December 5, 2023

Schola Director Posts ‘Live’ Recording

As I explained in my article posted earlier today, Nun Komm Der Heiden Heiland is actually a Catholic tune (in spite of what some have claimed). The volunteer choir I direct sang that beautiful ADVENT melody last Sunday, and I invite you to listen to the live recording. It will get better the more we […]

Jeff Ostrowski · December 5, 2023

PDF Download • “Lo! He comes with clouds descending” (Advent Hymn) — A Catholic Version!

Some days, Fulton J. Sheen received as many as 30,000 letters.

Jeff Ostrowski · December 1, 2023

1963 Photograph • Original Lyrics for Fr. Hellriegel’s “To Jesus Christ Our Sovereign King”

Photograph from 1963, the year Monsignor Hellriegel published his 𝐻𝑜𝑙𝑦 𝐶𝑟𝑜𝑠𝑠 𝑃𝑎𝑟𝑖𝑠ℎ 𝐻𝑦𝑚𝑛𝑎𝑙.

Jeff Ostrowski · December 1, 2023

Message from the Vice-President!

The Vice-President of the Church Music Association of America, Dr. Horst Buchholz (who also serves as Director of Sacred Music for the Archdiocese of Detroit) sent us an email yesterday regarding the harmonizations (PDF) I composed for the Gregorian Chant psalm tones. Dr. Buchholz says: “Those settings are absolutely exquisite, as I’m used to when […]

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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

“Cardinal Pole’s great synod at Canterbury (1557) wanted a reformed Roman Missal for use everywhere in England.”

— Father Gerald Ellard, SJ

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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