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Corpus Christi Watershed

Pope Saint Paul VI (3 April 1969): “Although the text of the Roman Gradual—at least that which concerns the singing—has not been changed, the Entrance antiphons and Communions antiphons have been revised for Masses without singing.”

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Views from the Choir Loft

Biographies

Mark Haas · June 4, 2025

Biography • Mark Haas

Liturgical compositions by Mark Haas have been sung in over 600 parishes.

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.

Patrick Williams · October 21, 2021

Biography • Mr. Patrick Williams

Mr. Williams holds a Bachelor of Arts in music from the University of Alabama…

Dr. Myrna Keough · October 27, 2020

Biography • Dr. Myrna Keough

Dr. Myrna Keough—who has earned two doctorates—is a conductor, composer, and educator dedicated to the renewal of sacred music in the Catholic Church.

Daniel Marshall · October 27, 2020

Biography • Daniel B. Marshall

Daniel specializes in helping parishes transition from contemporary to traditional music.

Dr. Charles Weaver · August 20, 2020

Biography • Charles Weaver

Charles Weaver is on the faculty of the Juilliard School…

Dr. Gregory Hamilton · July 20, 2020

Biography • Dr. Gregory Hamilton

Dr. Gregory Hamilton is a widely published composer and accomplished performer currently on the faculty of Holy Trinity Seminary in Dallas TX.

Corrinne May · July 5, 2020

Biography • Corrinne May

Corrinne holds a B.M in Songwriting from the Berklee College of Music in Boston and a B.A in English Literature (Hons.) from the National University of Singapore.

Daniel Tucker · May 2, 2020

Biography • Daniel Tucker

Mr. Tucker went on to Yale University, from which he graduated in May 2020 with a Master’s degree in choral conducting and a certificate from the Yale Institute of Sacred Music.

Keven Smith · April 16, 2020

Biography • Keven Smith

Keven earned a Bachelor of Music degree from the Curtis Institute of Music and a Master of Professional Writing degree from the University of Southern California…

William J. Fritz · January 22, 2020

Biography • William J. Fritz

William Fritz is a composer, pianist, organist, liturgical musician and director of music at St. John the Baptist Parish in Costa Mesa, CA.

Patrick Torsell · January 14, 2020

Biography • Patrick Torsell

Patrick Torsell began playing the organ at age 8, and has held organist and choirmaster positions across the nation…

Rebecca De La Torre · January 22, 2013

Biography • Rebecca De La Torre

Rebecca holds a Bachelor of Science in Computer Science from Arizona State University…

Veronica Brandt · January 16, 2013

Biography • Veronica Brandt

Veronica has published a wide variety of Catholic publications . . .

Dr. Alfred Calabrese · January 15, 2013

Biography • Dr. Alfred Calabrese

Alfred holds a doctorate in choral conducting from Indiana University…

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Corpus Christi Watershed

President’s Corner

    PDF Download • “Atténde Dómine”
    Although it isn’t nearly as ancient as other hymns in the plainsong repertoire, Atténde Dómine, et miserére, quía peccávimus tíbi (“Look down, O Lord, and have mercy, for we have sinned against Thee”) has become one of the most popular hymns for LENT—perhaps because it was included in the famous Liber Usualis of Solesmes. This musical score (PDF file) has an incredibly accurate version in English, as well as a nice version in Spanish, and also the original Latin. Although I don’t claim to have a great singing voice, this morning I recorded this rehearsal video.
    —Jeff Ostrowski
    Music List • (1st Sunday of Lent)
    Readers have expressed interest in seeing the ORDER OF MUSIC I’ve prepared for this coming Sunday—22 February 2026—the 1st Sunday of Lent (Year A). If such a thing interests you, feel free to download it as a PDF file. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the outstanding feasts website alongside the official texts in Latin. I spent an enormous amount of time preparing this ORDER OF MUSIC—because the children’s choir will join us—and some of its components came out great. For example, the COMMUNION ANTIPHON with Fauxbourdon is utterly resplendent, yet still ‘Lenten’.
    —Jeff Ostrowski
    2-Voice Arrangement for Lent
    Those seeking a two-voice arrangement for LENT and PASSIONTIDE should click here and scroll down. It’s based on number 775 in the Brébeuf Hymnal, with an enchanting melody written by Kevin Allen (the legendary American composer of sacred music). That text—“Pendens In Crucis Cornibus”—is often used for the Feast of our Lady of Sorrows. That link is important because, in addition to the musical score, it provides free rehearsal videos for each individual voice: something volunteer choirs appreciate!
    —Jeff Ostrowski

Quick Thoughts

    “Reminder” — Month of Febr. (2026)
    On a daily basis, I speak to people who don’t realize we publish a free newsletter (although they’ve followed our blog for years). We have no endowment, no major donors, no savings, and refuse to run annoying ads. As a result, our mailing list is crucial to our survival. It couldn’t be easier to subscribe! Just scroll to the bottom of any blog article and enter your email address.
    —Jeff Ostrowski
    PDF Chart • “Plainsong Rhythm”
    I will go to my grave without understanding the lack of curiosity so many people have about the rhythmic modifications made by Dom André Mocquereau. For example, how can someone examine this single sheet comparison chart and at a minimum not be curious about the differences? Dom Mocquereau basically creates a LONG-SHORT LONG-SHORT rhythmic pattern—in spite of enormous and overwhelming manuscript evidence to the contrary. That’s why some scholars referred to his method as “Neo-Mensuralist” or “Neo-Mensuralism.”
    —Jeff Ostrowski
    PDF • “O Come All Ye Faithful” (Simplified)
    I admire the harmonization of “Adeste Fideles” by David Willcocks (d. 2015), who served as director of the Royal College of Music (London, England). In 2025, I was challenged to create a simplified arrangement for organists incapable of playing the authentic version at tempo. The result was this simplified keyboard arrangement (PDF download) based on the David Willcocks version of “O Come All Ye Faithful.” Feel free to play through it and let me know what you think.
    —Jeff Ostrowski

Random Quote

“The renewal also showed clearly that the formulas of the Roman Missal had to be revised and enriched. This was begun by Pope Pius XII in the restoration of the Easter Vigil and the Holy Week services, which formed the first stage in accommodating the Roman Missal to contemporary mentality.”

— Pope Paul VI (1974 Sacramentary)

Recent Posts

  • The Weekday Communions of Lent
  • PDF Download • “Atténde Dómine”
  • “Chant Is Not a Penitential Act” • Lenten Reflection by Daniel Marshall
  • (Ash Wednesday) • Medieval Illumination Depicting the Distribution of Ashes
  • Music List • (1st Sunday of Lent)

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