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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 · February 15, 2018

Phone Interview • Fr. Guy Nicholls, Cong. Orat.

The Blessed John Henry Newman Institute of Liturgical Music (England) has a big announcement!

Jeff Ostrowski · February 13, 2018

Hymn Tunes That Are Actually The Same

Look carefully at this image…

Jeff Ostrowski · February 12, 2018

“Live Excerpts” … With One Rehearsal

This is something we will do again, because I think there’s great potential here.

Jeff Ostrowski · February 9, 2018

How Medieval Books Were Made

Absolutely *fascinating* beyond words!

Jeff Ostrowski · February 8, 2018

Brave Schola Director Posts “Live” Recording 1

…recorded on 28 January 2018.

Jeff Ostrowski · February 1, 2018

Sexagesima Sunday (Extraordinary Form)

“Now they upon the rock are they who when they hear, receive the word with joy…”

Jeff Ostrowski · February 1, 2018

Video • Ratzinger made a Cardinal by Paul VI

Quite beautiful, but I prefer a different harmonization of “Holy God We Praise Thy Name”…

Jeff Ostrowski · January 28, 2018

PDF Download • “Agnus Dei” … for Lent

…including rehearsal videos for each individual voice!

Jeff Ostrowski · January 26, 2018

Septuagesima Sunday (Extraordinary Form)

“The groans of death surround me, the sorrows of hell encompassed me…”

Jeff Ostrowski · January 24, 2018

English Prayers at EF Mass • How old are they?

The English translation memorized by “Latin Mass” Catholics goes back centuries!

Jeff Ostrowski · January 22, 2018

PDF Download • Dom Pothier Biography (1947)

“Dom Pothier himself acted as an illustrator, decorating his work with vignettes, illuminated capitals, tailpieces, even full-page illustrations representing the mysteries of the Annunciation and Christmas.”

Jeff Ostrowski · January 19, 2018

PDF • “Hosanna” Catholic Hymnal (285 Pages)

“Many choirs of children still use hymnals that are wretched from a musical and ecclesiastical standpoint…” —Fr. Ludwig Bonvin

Jeff Ostrowski · January 18, 2018

3rd Sunday after Epiphany (Extraordinary Form)

“…and behold a leper came and adored Him, saying, Lord, if Thou wilt Thou canst make me clean.”

Jeff Ostrowski · January 17, 2018

Spanish Subtitles Added • Absolutely Superb!

The interviews with young Catholics are truly awesome.

Jeff Ostrowski · January 11, 2018

PDF Download • Easy Hymn with Melody in Tenor

The Brébeuf hymnal contains carefully chosen and flexible melodies; do you see how the following tune (“Old Hundredth”) can be used in the Tenor voice?

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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

What earlier generations held as sacred, remains sacred and great for us too, and it cannot be all of a sudden entirely forbidden or even considered harmful.

— Pope Benedict XVI, Letter accompanying “Summorum Pontificum” (7/7/07)

Recent Posts

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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.

The election of Pope Leo XIV has been exciting, and we’re filled with hope for our apostolate’s future!

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President’s Message (dated 30 May 2025)

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