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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 · May 17, 2017

Rehearsal Videos • “Ave Sacer Christi Sanguis”

Precious few modern masterpieces exist…but this motet by Kevin Allen is one.

Jeff Ostrowski · May 16, 2017

EWTN Video • Priestly Fraternity of Saint Peter

Two members talk about their new CD, “Requiem.”

Jeff Ostrowski · May 10, 2017

Musical Resources • 4th Sunday after Easter (1962)

“…He shall not speak of Himself; but what things soever He shall hear, He shall speak…”

Jeff Ostrowski · May 9, 2017

Guerrero’s Gloria from “Missa Iste Sanctus”

Why Do We Produce Rehearsal Videos? And what made more than 600 people show up for Santa Barbara’s first Latin Mass in fifty years?

Jeff Ostrowski · May 4, 2017

Fulton J. Sheen • World’s Most Progressive Bishop?

Sheen replied: “Mr. President, I’m not the least bit impressed with your source.”

Jeff Ostrowski · April 30, 2017

Justice Antonin Scalia on Church Music

“I would go there Sunday morning and sing Palestrina, William Byrd, Mozart…this magnificent choral music.”

Jeff Ostrowski · April 25, 2017

Brace Yourself • “Raw” Recordings from Solemn Mass

There’s something remarkable about instances where the people involved don’t realize a recording is being made.

Jeff Ostrowski · April 23, 2017

PDF Download • “Compline for Sunday”

My ignorance vis–à–vis the 1962 Breviary will astound you…

Jeff Ostrowski · April 21, 2017

Musical Resources • “Quasimodo Sunday”

“Receive ye the Holy Ghost; whose sins you shall forgive, they are forgiven them, and whose sins you shall retain, they are retained.”

Jeff Ostrowski · April 21, 2017

Nine Questions About The Latin Mass You Were Too Embarrassed To Ask

When I first attended the Traditional Mass, I hated it.

Jeff Ostrowski · April 17, 2017

PDF Download • Last Minute Holy Saturday File

“The use of Psalm 150 is a change from the experimental Easter Vigil (1951-1955) in which Psalm 116 was used for Lauds.” —Msgr. McManus

Jeff Ostrowski · April 15, 2017

“Reproaches” for Good Friday (Recording)

The indispensable “Musician’s Guide to Good Friday,” including a 50-page PDF and rehearsal videos!

Jeff Ostrowski · April 13, 2017

Do these Holy Thursday rubrics strike you as odd?

I haven’t studied the situation enough to know with certainty.

Jeff Ostrowski · April 12, 2017

“Contemporary” Catholic Music • Is it truly dead?

Today we announce a special guest who will be present at the Sacred Music Symposium!

Jeff Ostrowski · April 12, 2017

Musical Resources • Holy Thursday (EF)

“O God, from Whom Judas received the punishment of his crime, and the thief the reward of his confession…”

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Corpus Christi Watershed

President’s Corner

    PDF Download • Communion for Sunday
    The COMMUNION ANTIPHON with fauxbourdon psalm verses for this coming Sunday (3 May 2026) is elegant and poignant. It’s such a shame it only comes every three years. This piece—along with all the musical scores for this coming Sunday, which is the 5th Sunday of Easter (Year A)—can be downloaded free of charge from the flourishing feasts website. By the way, how is it already 2026?
    —Jeff Ostrowski
    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

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

“Contradictions place us at the foot of the Cross, and the Cross places us at the gates of Heaven.” (Saint John Mary Vianney)

— Cardinal Merry del Val’s Prayer-Book

Recent Posts

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

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