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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

PDF Download

Jeff Ostrowski · September 10, 2022

PDF Download • “Choir Warm-Up Exercise”

Your singers might enjoy this vocal warm-up exercise I composed for a volunteer choir.

Jeff Ostrowski · September 6, 2022

PDF Download • “Organ Interludes—including pedals—on Plainchant Melodies” (55 pages)

Father Ould and William Sewell (organist at the Birmingham Oratory of Saint Philip Neri) produced an impressive collection.

Jeff Ostrowski · August 23, 2022

PDF Download • Organ Accompaniment for Kyrie VIII (“Missa de Angelis”) by Jeff Ostrowski

I consider this my best organ accompaniment … I hope you like it!

Jeff Ostrowski · August 17, 2022

PDF Download • Extremely Rare! — 1913 “Vesperale” by Schwann (954 pages)

Today’s release will go down in history!

Andrea Leal · August 15, 2022

PDF Download • Organ Interludes Based on Plainsong (Manuals Only) — 104 pages!

A terrific collection of organ interludes (manuals only) for free PDF download.

Veronica Moreno · July 27, 2022

Church Music Jobs • “March 2023” Installment

Know of additional church music job openings? Please share them!

Dr. Charles Weaver · July 23, 2022

Pothier Teaches Us to Sing an Antiphon

A look at Dom Pothier’s performance instructions for a communion antiphon reveals a great deal of complexity in this pre-Mocquereau interpretive approach.

Jeff Ostrowski · July 22, 2022

PDF Download • Professionally-Scanned “Graduale Romanum” (Schwann, 1908) • 1,129 pages!

This is the “pure” Vatican Edition—technically the only version of the rhythm allowed by Church documents!

Jeff Ostrowski · July 12, 2022

PDF Download • “Sunday Vespers” (22 pages)

In spite of its imperfections, creating this (draft) booklet required much more effort than I had anticipated.

Jeff Ostrowski · June 14, 2022

“Stowe Missal Eucharistic Motets” • For 3 Voices

This melody won’t leave your head—it keeps playing “on repeat.”

Jeff Ostrowski · May 26, 2022

PDF Download • “Spanish TLM Missal” (2,288 pages)

A french version (1,798 pages) is also available for free PDF download.

Jeff Ostrowski · May 21, 2022

PDF Download • “A Canon Choirs Love!”

You will notice Father Guerrero takes the chant melody (“Beata Mater”) and creates a perfect canon between Soprano and Alto.

Jeff Ostrowski · May 17, 2022

PDF Download • 2022 “Vespers Booklet” (99 Pages)

If you spot typos, please let us know!

Jeff Ostrowski · April 18, 2022

{ Next Year! } • Somber Kyrie Settings For Lent

Corpus Christi Watershed has provided rehearsal videos to assist choir members who do not read music well.

Jeff Ostrowski · April 11, 2022

PDF Download • SATB “Refrain” for Good Friday

Is it “traditional” to receive Holy Communion on Good Friday?

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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

“By a decree of the synod of the diocese of Exeter in 1284, no one should claim any seat in a church; but whoever first entered a church for the purpose of devotion, might choose at his pleasure a place for praying.”

— A work by Fr. Husenbeth (d. 1872)

Recent Posts

  • Now Available! • “Hymns of Cardinal Newman: Kevin Allen’s Legendary Choral Settings”
  • 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”

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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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