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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

William Byrd Composer

Jeff Ostrowski · April 4, 2024

Jeff Ostrowski To Leave Los Angeles!

I believe Catholics have a right to attend Mass without being aurally assaulted.

Jeff Ostrowski · March 25, 2024

William Byrd • “Mass for Five Voices”

Working with volunteers can be discouraging, but always remember there’s light at the end of the tunnel. Yesterday, during PALM SUNDAY MASS, our 100% volunteer choir pulled out the SANCTUS from William Byrd’s “Mass for Five Voices.”  This colossal performance was the result. (They literally didn’t know I was going to have them sing that […]

Jeff Ostrowski · September 28, 2023

William Byrd • Simple “Agnus Dei” Canon

Time flies! Back in July, I posted a PDF setting of a perfect canon by William Byrd (d. 1623) arranged as an AGNUS DEI for three voices. Last Sunday, we sang that arrangement with our volunteer choir. To hear a ‘live’ recording of it, click here (Mp3). In my humble opinion, this would be a perfect […]

Jeff Ostrowski · September 18, 2023

William Byrd • “Mass for Five Voices”

Our volunteer choir is learning the “Sanctus” from William Byrd’s Mass for Five Voices. You can hear a short excerpt (recorded last Sunday) but please ignore the sound of babies crying: Mp3 recording. We still have work to do—but we’re on the right track. Once we have some of the tuning issues fixed, I desire […]

Dr. Alfred Calabrese · September 7, 2023

Dr. Alfred Calabrese on William Byrd’s “Sanctus” • (Mass for Five Voices)

“The Byrd Masses were printed without title pages, and with no reference to a composer. It was too dangerous to do so.” —Dr. Calabrese

Dr. Lucas Tappan · July 6, 2023

William Byrd: Quatercentenary of Death

“And yet I may live and die a true and perfect member of his holy Catholic Church without which I believe there is no salvation for me.” —William Byrd

Jeff Ostrowski · April 30, 2023

My Student Singing Byrd Will Make You Weep!

Today we release polyphony by two composers: William Byrd and William Fritz.

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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

[Speaking of those who wish to eliminate Latin from the liturgy.] “One may well wonder what the origin is of this new way of thinking and this sudden dislike for the past; one may well wonder why these things have been fostered.”

— Pope Saint Paul VI (15 August 1966)

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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