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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 · June 4, 2019

PDF Download • “Magnificat” + Rehearsal Videos!

“You think I’m kidding, but I’m not. I know of no greater piece than this.” —Jeff Ostrowski

Jeff Ostrowski · May 30, 2019

Learn To Sing SATB • “A New Approach!”

Twelve (12) hymns are already available, with tons more on the way!

Jeff Ostrowski · May 29, 2019

What Makes A “Catholic” Hymnal?

I find the following pairings reprehensible…

Jeff Ostrowski · May 23, 2019

PDF Download • Palestrina “Gloria” w/ practice videos!

Careful: the Alto line is surprisingly difficult!

Jeff Ostrowski · May 17, 2019

PDF Download • Franz Liszt and Gregorian Chant

Many would ask: “What is the purpose of posting such books? Are we supposed to sing from them?” • It turns out, these editions help us understand the journey of Franz Liszt to understand Gregorian modality.

Jeff Ostrowski · May 16, 2019

How Do You Mark Starting Pitches?

Some might ask: “Why not just write the name of the note?”

Jeff Ostrowski · May 8, 2019

1941 Mass (Chicago) mixed with 2017 Mass (FSSP)

I can’t remember if I ever released this “comparison” video…

Jeff Ostrowski · May 6, 2019

“Common” Hymn Melodies • What are they?

Choirmasters and organists understand how crucial flexibility is.

Jeff Ostrowski · May 2, 2019

PDF Download • Complete Kyriale on Modern Staves!

If you can read treble clef, you can read this edition … a brilliant idea!

Jeff Ostrowski · April 22, 2019

Josef Hofmann: “King of Pianists”

This excerpt from a 1980 radio interview with Abe Chasins proves I’m not crazy…

Jeff Ostrowski · April 20, 2019

PDF Download • “Cheat Sheet” for Easter Vigil

Releasing this is probably a bad idea…too late!

Jeff Ostrowski · April 19, 2019

PDF Download • Organ Interludes for Manuals!

I will most definitely be playing these pieces—based on hymn tunes—by Georg Philipp Telemann!

Jeff Ostrowski · April 12, 2019

Musical Program for Covid-19

Saint Vitus • MATT GONZALEZ WEDDING • Saturday, 1 August 2020…bride walks at Noon! ——Call time for singers is 10:00am ENTRANCE Organist will play INTROIT • “Deus Israël conjungat” Sung by Men from Goupil-Chant Search the René Goupil website for “pro sponsis” KYRIE #81668 — Palestrina “Fons Bonitatis” part 1 #81249 — Palestrina “Fons Bonitatis” […]

Jeff Ostrowski · April 12, 2019

The Amazing Uy Family Singers!

Not a piece you expected to hear today!

Jeff Ostrowski · April 10, 2019

(captured by iPhone) • Rehearsing for the Symposium

Do me a huge favor…

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Corpus Christi Watershed

President’s Corner

    Bugnini’s Statement (6 November 1966)
    With each passing day, more is revealed about how the enemies of the liturgy accomplished their goals. For instance, Hannibal Bugnini deeply resented the way Vatican II said Gregorian Chant “must be given first place in liturgical services.” On 6 November 1966, his cadre wrote a letter attempting to justify the elimination of Gregorian Chant with this brazen statement: “What really gives a Mass its tone is not so much the songs as it is the prayers and readings.” Bugnini’s cadre then attacked the very heart of Gregorian Chant (viz. the Proprium Missae), bemoaning how the Proprium Missae “is completely new each Sunday and feast day.” There is much more to be said about this topic. Stay tuned.
    —Jeff Ostrowski
    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

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

“Thus, by the celebration of a single Mass (in which he offers Jesus Christ in sacrifice), a priest gives greater honor to the Lord than if all men by dying for God offered to him the sacrifice of their lives. By a single Mass, he gives greater honor to God than all the angels and saints—along with the Blessed Virgin Mary—have given or shall give to him; for their worship cannot be of infinite value, like that which the priest celebrating on the altar offers to God.”

— Saint Alphonsus Liguori

Recent Posts

  • Bugnini’s Statement (6 November 1966)
  • (Rehearsal Clips) • Sacred Music Symposium 2025
  • Hidden Gem: Ascendit Deus (Dalitz)
  • PDF Download • Soprano Descant — “Hail, Holy Queen Enthroned Above”
  • “Dom Jausions had a skilled hand. His transcriptions are masterpieces of neatness & precision.”

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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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