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Corpus Christi Watershed

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Views from the Choir Loft

Matthew Frederes • Article Archive

Mr. Frederes is a software engineer, pilot, served as an organist for 31 years, and directed small parish choirs/scholas for 22 years. He and his wife have 12 children. —Read full biography (with photographs).

Matthew Frederes · July 6, 2024

Bidding Starts in 4 Days on these Catholic treasures!

Christie’s Valuable Books and Manuscripts auction on July 10 will be offering a selection of important Catholic medieval and renaissance manuscripts for sale.

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Matthew Frederes · May 8, 2024

J. R. R. Tolkien and Guéranger : Antiquarianism is Protestantism! Was Pius X an Antiquarianist?

The Church is a living body, that has grown from a seed to a full grown tree. It can never return to the seed.

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Matthew Frederes · September 4, 2023

Revealed! • Father Enemond Massé Manuscripts of Sacred Gregorian Chant

Please enjoy this new addition to the website which provides a useful list of manuscripts discussed on this blog, for easy access to the same sources used by the contributors!

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Matthew Frederes · August 8, 2023

“Graduale Romanum” • Rare Edition from 1661 A. D.

Today we release an exceedingly rare 1661 edition of the Graduale Romanum, in high resolution and in full color!

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Matthew Frederes · March 6, 2023

Grant Awarded for Digitizing Over 400,000 Pages of Ancient Solesmes Manuscripts

REPERTORIUM has been awarded a large grant to scan and digitize over 400,000 ancient manuscript images from the Abbey of Saint-Pierre de Solesmes archive.

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Matthew Frederes · March 4, 2023

Alfred Calabrese leads choir on EWTN with Archbishop Cordileone

Sign up today to hear Band of Voices, led by Alfred Calabrese, sing eight Latin motets on EWTN on Saturday, March 11, 2023. Archbishop Cordileone will be offering commentary as a Lenten reflection.

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Matthew Frederes · March 1, 2023

Obedience In Sacred Music, Liturgy • Matthew Frederes Answers Patrick Williams

Obedience to the Church, and respect for Tradition is paramount in Sacred Music, as well as subjugation to the Liturgy. Was GR (1974) “The” Critical Edition? An incessant or insatiable thirst for variety and novelty is a vicious symptom of our modern age.

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Matthew Frederes · February 27, 2023

Do We Need a Beautiful Cento, or an Archaic Reversion?

The Vatican Edition, as well as St. Gregory’s work were both a Cento built on tradition to unify the Church. Semiological editions are archaic reversions. A close look at the Puer Natus Est in both forms is offered.

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Matthew Frederes · December 12, 2022

Recent Book! • “The Politics of Plainchant”

Fascinating details from never-before-seen letters recently discovered in southern France!

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Matthew Frederes · November 10, 2022

Gregorian Rhythm Wars • “Frederes Feedback”

Why declare that rhythmic signs are permitted if alteration of any kind is unacceptable? It doesn’t make any sense…

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Matthew Frederes · December 3, 2021

Biography • Matthew D. Frederes

In addition to being a husband and father of 12 children, Mr. Frederes is a software engineer, pilot, and served as an organist & choirmaster 33 years.

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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

“In case of urgent danger of life anyone may baptize, even a heretic or pagan. It is sufficient that he administer the essential matter and form and have the implicit intention of doing what Christ instituted. Naturally a Catholic must be preferred, if possible. A man is preferred to a woman; but anyone else to the parents.”

— Father Adrian Fortescue (1917)

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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