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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 · August 9, 2016

Too Many Sopranos? Try This Canon!

A compositional miracle by Rev’d Tomás Luis de Victoria (d. 1611).

Jeff Ostrowski · August 8, 2016

Being Careful With Hymns

Each individual “ear” must decide what is acceptable.

Jeff Ostrowski · August 6, 2016

Interesting Points in this Sunday’s Offertory

Do you understand why I’ve highlighted various points?

Jeff Ostrowski · August 3, 2016

The “Long & Short” of Latin Hymns

Such underlay would be considered loathsome by composers like Guerrero. Indeed, it’s an impossibility!

Jeff Ostrowski · August 2, 2016

Eugenio Cardinal Pacelli in Cappa Magna

Anyone care to hazard a guess regarding why a blue biretta would have been used circa 1933?

Jeff Ostrowski · August 1, 2016

Does Your Bishop Enforce The GIRM?

They will assume—and why shouldn’t they?—that “approved by the USCCB” applies to the hymns and songs…

Jeff Ostrowski · July 30, 2016

Why is a Raven Like a Writing Desk?

“To the historian their decisions are disgusting nonsense that people of my kind want simply to ignore.” — Fr. Adrian Fortescue (1919)

Jeff Ostrowski · July 27, 2016

Letter To A Volunteer Choir…

The singers know their individual contribution is essential.

Jeff Ostrowski · July 27, 2016

Musical Resources • 11th Sunday after Pentecost

“…pour forth Thy mercy upon us, to take away from us those things which our conscience feareth…”

Jeff Ostrowski · July 26, 2016

Victoria Alleluia • Extraordinary & Ordinary Form

If your priest requires the congregation sing the “Alleluia,” there’s a nice way to do this.

Jeff Ostrowski · July 24, 2016

Musical Resources • 10th Sunday after Pentecost

“O God, Who dost chiefly manifest Thy power in forbearance and mercy…”

Jeff Ostrowski · July 20, 2016

PDF Download • St. Cecilia Hymnal (1937)

Like all the books we release, this extremely rare hymnal was previously unavailable until we scanned and uploaded it.

Jeff Ostrowski · July 17, 2016

Showdown in Arkansas over “Ad Orientem”

The Bishop of Little Rock has sent a letter (14 July 2016) forbidding his priests to celebrate Mass “ad orientem.”

Jeff Ostrowski · July 16, 2016

Musical Resources • 9th Sunday after Pentecost

“…and that Thou mayest grant their desires to them, make them ask only for things that please Thee…”

Jeff Ostrowski · July 13, 2016

Shocking Developments From Westminster

If Cardinal Nichols had simply sent a letter saying why he prefers “versus populum,” I believe that would have been a better choice.

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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

“During Lent…the use of musical instruments is allowed only so as to support the singing. Nevertheless, Laetare Sunday (the Fourth Sunday of Lent), Solemnities and Feasts are exceptions to this rule.”

— ‘Roman Missal, 3rd Edition (2011)’

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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