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Corpus Christi Watershed

A monthly subscription fee of $4.95 gives access to the entire website (beginning on 8 May 2026). Thank you for supporting our efforts!

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    • Brébeuf Catholic Hymnal
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    • KYRIALE • Saint Antoine Daniel
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  • MUSICAL WEBSITES
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    • Miscellaneous
      • Sainte Marie Bulletin Articles
      • “Let the Choir Have a Voice” (Essay)
      • Catechism of Gregorian Rhythm
      • Sacred Music Symposium 2023
      • The Eight Gregorian Modes
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      • Father Enemond Massé Manuscripts
      • Seven (7) Considerations
    • René Goupil Gregorian Chant
    • Saint Jean de Lalande Library
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    • Nova Organi Harmonia (2,279 pages)
    • Roman Missal, 3rd Edition
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Views from the Choir Loft

PDF Download

Jeff Ostrowski · June 12, 2019

PDF Download • Symposium Booklet (159 pages)

…probably unlike any musical booklet you’ve come across!

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Jeff Ostrowski · June 10, 2019

PDF Download • Vespers Organ Accompaniments

Do you understand why some of the harmonies are blank?

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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

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Jeff Ostrowski · May 23, 2019

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

Careful: the Alto line is surprisingly difficult!

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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.

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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!

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Jeff Ostrowski · April 20, 2019

PDF Download • “Cheat Sheet” for Easter Vigil

Releasing this is probably a bad idea…too late!

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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!

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Jeff Ostrowski · April 8, 2019

PDF Download • Spectacular “Tenebrae” Booklet

Mr. Albert Bloomfield has done us a breathtaking favor.

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Jeff Ostrowski · April 4, 2019

PDF Download • Mystery Kyriale (100 Pages)

Nobody knows the author or date of publication.

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Jeff Ostrowski · January 22, 2019

PDF Download • “Chant Service Book” (208 pages)

An extremely rare book from 1941, containing all your favorite Gregorian chants!

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Jeff Ostrowski · December 22, 2018

PDF Booklet • Christmas Midnight Mass (36 pages)

It looks so simple when placed in a booklet like that…

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Veronica Brandt · December 1, 2018

PDF Download • “Easy Organ Interludes” (229 pages)

Giovanni Battista Fasolo published an enormous book of organ interludes without pedals • Pierre Gouin typed them up, bringing you this clear window into renaissance liturgical music for free! • Enjoy this treasure trove of organ music from almost 400 years ago! Plus a few highlights from along the way+

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Jeff Ostrowski · November 15, 2018

PDF Download • Mass Hymns by Fr. Seed, SJ (1906)

How utterly strange to see such items!

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Jeff Ostrowski · November 6, 2018

PDF Download • “Pope Pius XII Hymnal” (1959)

Were you shocked to see the Pius XII Hymnal assigning vernacular hymns to different parts of the Mass?

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Corpus Christi Watershed

President’s Corner

    Music List • “Ascension of the Lord”

    Readers have expressed interest in examining my “music list” for this coming Sunday.

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    —Jeff Ostrowski
    PDF Download • “For Pentecost Sunday”

    There’s a triple ‘allelúja’ and I just love the chord at the end of the 2nd iteration.

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    —Jeff Ostrowski
    PDF Download • “Organ Accompaniment”

    The following declaration will probably smack of “blowing my own horn.”

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    —Jeff Ostrowski

Quick Thoughts

    “Thee” + “Thou” + “Thine”

    Regarding approval for the “Revised Standard Version (Catholic Edition).”

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    —Jeff Ostrowski
    “Reminder” — Month of May (2026)

    Since a new month has arrived, it’s my pleasure to remind you that…

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    —Jeff Ostrowski
    Simplified Version • “Canon in D” (Pachelbel)

    I don’t care what people say; I love this piece!

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    —Jeff Ostrowski

Random Quote

“The conciliar norms regarding reform of the liturgy have given the choir’s function greater prominence and importance. The choir is responsible for the correct performance of the parts that belong to it…”

— “Musicam Sacram” (5 March 1967)

Recent Posts

  • “A New Chapter” • Subscriptions!
  • 7 Suggestions • Singing Gregorian Chant “Correctly”
  • Music List • “Ascension of the Lord”
  • Call For Submissions! • ‘Usus Antiquior’ in Contemporary Catholicism (October 2026)
  • Inspiring Paper from a Graduating High School Senior

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CONTACT • Corpus Christi Watershed

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Corpus Christi Watershed
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Corpus Christi Watershed is a 501(c)3 non-profit organization recognized by the state of Texas on 19 October 2006. Our statement of purpose notes that we “employ the creative media in service of theology, the Church, and Christian culture for the enrichment and enjoyment of the public.”