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Corpus Christi Watershed

We’re a 501(c)3 public charity established in 2006. We have no endowment, no major donors, no savings, and run no advertisements. We exist solely by the generosity of small donors.

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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 6, 2015

Pope Paul VI Celebrates Ambrosian Rite At Vatican II

Cardinal Montini—later known as Pope Paul VI—celebrates Mass in the St. Peter’s Basilica during Vatican II.

Jeff Ostrowski · August 5, 2015

Musical Resources • 11th Sunday after Pentecost (Extraordinary Form)

The Verdelot “Agnus Dei” gets better and better the more we explore its treasures.

Jeff Ostrowski · August 5, 2015

Help Needed From Organists Who Can Improvise!

Are you a composer?

Jeff Ostrowski · August 4, 2015

Why St. Josemaría Escrivá Only Celebrated The Extraordinary Form

“Such moments had been a part of his spiritual life since boyhood and through his priesthood.”

Jeff Ostrowski · August 4, 2015

The Easiest Way To Teach Your Choir Polyphony

What could be simpler or more fun than this?

Jeff Ostrowski · August 4, 2015

My Response To “Should Church Singers Be Paid?”

“The labourer is worthy of his hire.” (I Tim 5:18)

Jeff Ostrowski · August 2, 2015

Loading Choir Binders for 2 August 2015

Once we finish revising the scores at Goupil, this will be unnecessary.

Jeff Ostrowski · July 30, 2015

Archbishop Fulton J. Sheen On Gregorian Chant

“I did my best to give utterance to all those black notes in the missal.” —Fulton J. Sheen

Jeff Ostrowski · July 29, 2015

Musical Resources • 10th Sunday after Pentecost (Extraordinary Form)

The recessional is bright, happy, and beautiful.

Jeff Ostrowski · July 28, 2015

A Most Devastating Change By Pope Paul VI

“We strongly resent the implication that we and our children are not sufficiently intelligent to understand the simple Latin of the Mass…” —Manifesto of the Catholic Laity (1943)

Jeff Ostrowski · July 27, 2015

Why It’s Pointless To Argue Over Our Roman Missal Translation

“Women forced to sell their bodies in desperation and fear” —From a 2013 GIA hymnal

Jeff Ostrowski · July 24, 2015

Pope Pius XI and “Concelebration”

Can anyone shed light on this?

Jeff Ostrowski · July 23, 2015

Polyphony (SATB) By Verdelot • With Optional Hymn “Christe Supreme”

Amazing! Verdelot’s cadence here sounds quite modern!

Jeff Ostrowski · July 22, 2015

The “Little Rock Nine” & Sacred Music

How could closing down all the schools be a good plan?

Jeff Ostrowski · July 22, 2015

Musical Resources • 9th Sunday after Pentecost (Extraordinary Form)

The organist will play softly at the Offertory.

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Corpus Christi Watershed

President’s Corner

    Luis Martínez Must Go!
    Sevilla Cathedral (entry dated 13 December 1564): The chapter orders Luis Martínez, a cathedral chaplain, to stay away from the choirbook-stand when the rest of the singers gather around it to sing polyphony—the reason being that “he throws the others out of tune.” [Excerpt from “The Life of Father Francisco Guerrero.”]
    —Jeff Ostrowski
    Urgent! • We Desperately Need Funds!
    A few days ago, the president of Corpus Christi Watershed posted this urgent appeal for funds. Please help us make sure we’re never forced to place our content behind a paywall. We feel it’s crucial that 100% of our content remains free to everyone. We’re a tiny 501(c)3 public charity, entirely dependent upon the generosity of small donors. We have no endowment and no major donors. We run no advertisements and have no savings. We beg you to consider donating $4.00 per month. Thank you!
    —Jeff Ostrowski
    “Booklet of Eucharistic Hymns” (16 pages)
    I was asked to create a booklet for my parish to use during our CORPUS CHRISTI PROCESSION on 22 June 2025. Would you be willing to look over the DRAFT BOOKLET (16 pages) I came up with? I tried to include a variety of hymns: some have a refrain; some are in major, others in minor; some are metered, others are plainsong; some are in Spanish, some are in Latin, but most are in English. Normally, we’d use the Brébeuf Hymnal—but we can’t risk having our congregation carry those heavy books all over the city to various churches.
    —Jeff Ostrowski

Quick Thoughts

    Pope Pius XII Hymnal?
    Have you ever heard of the Pope Pius XII Hymnal? It’s a real book, published in the United States in 1959. Here’s a sample page so you can verify with your own eyes it existed.
    —Corpus Christi Watershed
    “Hybrid” Chant Notation?
    Over the years, many have tried to ‘simplify’ plainsong notation. The O’Fallon Propers attempted to simplify the notation—but ended up making matters worse. Dr. Karl Weinmann tried to do the same in the time of Pope Saint Pius X by replacing each porrectus. You can examine a specimen from his edition and see whether you agree he complicated matters. In particular, look at what he did with éxsules fílii Hévae.
    —Corpus Christi Watershed
    Antiphons Don’t Match?
    A reader wants to know why the Entrance and Communion antiphons in certain publications deviate from what’s prescribed by the GRADUALE ROMANUM published after Vatican II. Click here to read our answer. The short answer is: the Adalbert Propers were never intended to be sung. They were intended for private Masses only (or Masses without music). The “Graduale Parvum,” published by the John Henry Newman Institute of Liturgical Music in 2023, mostly uses the Adalbert Propers—but sometimes uses the GRADUALE text: e.g. Solemnity of Saints Peter and Paul (29 June).
    —Corpus Christi Watershed

Random Quote

“Dom Pothier does not belong to the dim past, as the silence which surrounds his name would lead one to believe. Only a few years separate us from the time when—growing old and heavily burdened by trials—Dom Pothier was concentrating his ever keen attention on the study of manuscripts in the Belgian place of retreat where his community had found refuge. For he was the abbot; and there can be no doubt that the cross he wore during those days was a cross of sorrow, though he bore it with a smile.”

— Dom Ermin Vitry, OSB (31-OCT-1936)

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Corpus Christi Watershed is a 501(c)3 public charity dedicated to exploring and embodying as our calling the relationship of religion, culture, and the arts. This non-profit organization employs the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.

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President’s Message (dated 30 May 2025)

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