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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

Andrew Leung • Article Archive

Andrew Leung graduated from the sacred music program of Franciscan University of Steubenville, majored in vocal performance. He has also studied organ, choral conducting and Gregorian chant with world-class musicians. Prior to returning to Hong Kong, he served as a parish music director in Atlanta, and later as the organist and choirmaster at the Cathedral of Macau, China. Andrew is currently the music director of Vox Antiqua, conductor of the Cecilian Singers and music director at Our Lady of China Church. He is also an artist and vocal coach at the Paul Phoenix Academy.—Read full biography (with photographs).

Andrew Leung · February 18, 2016

Are you Praying the Mass?

An old and holy priest talks about prayer and the liturgy.

Andrew Leung · February 11, 2016

Three Common Misconceptions about Chant

If we can solve these 3 misunderstandings, people can fall in love with chant easier!

Andrew Leung · February 4, 2016

BBC’s Choral Vespers from the London Oratory

The Sung Vespers is currently featured by BBC Radio 3

Andrew Leung · February 4, 2016

Interview • Brandon Harvey, Founder of a New Institute

Brandon Harvey introducing the new Ministry Institute of Christ the Servant

Andrew Leung · January 28, 2016

Is the Latin Mass Dead?

The Latin Mass is dead in a sense, its “rubrical growth” stopped in 1962.

Andrew Leung · January 28, 2016

Diocese of Marquette Taking a Brave Step

Bishop John Doerfler’s new Instruction on Sacred Music in Divine Worship.

Andrew Leung · January 21, 2016

Free Downloads • Works by Cardinal Bartolucci (Part 1)

Choral works by Cardinal Bartolucci, former director of the Sistine Chapel Choir, is available for download now!

Andrew Leung · January 13, 2016

Fun Video • Classical Music Mashup

This is what happen when you play multiple classical pieces together.

Andrew Leung · January 7, 2016

A Faithful Bishop

I am very thankful that I get to know Bishop Roger Foys of Covington, KY, who wrote a great letter and decree about the Mass back in 2011.

Andrew Leung · January 5, 2016

Catholic Service to be Celebrated in the Chapel Royal

What exciting news! The first Catholic service in centuries is to be celebrated in the Chapel Royal!

Andrew Leung · December 31, 2015

Te Deum Laudámus

Listen to Herbert Howells’s Te Deum to start the new year!

Andrew Leung · December 31, 2015

Chant Workshop for Clergy

St. Ambrose School of Chant located in Georgia is organizing a Chant Workshop for Clergy.

Andrew Leung · December 30, 2015

Bishop Perry at Prince of Peace Catholic Church

Bishop Joseph Perry administered the Sacrament of Confirmation and celebrated a Pontifical Solemn High Mass on Gaudete Sunday.

Andrew Leung · December 26, 2015

New Choir Stalls for the Sistine Chapel Choir

The Sistine Chapel Choir sang beautifully at the Midnight Mass at St. Peter’s Basilica.

Andrew Leung · December 22, 2015

Video • Holy Mass in Hollywood, 1944

A video of the Christmas Solemn High Mass in Hollywood film, “Christmas Holiday”

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Corpus Christi Watershed

President’s Corner

    💲 5.00 💵
    Our tiny 501(c)3 nonprofit organization exists solely by generous readers who donate $5.00 per month. We have no endowment; we have no major donors; we run no advertisements; we have no savings. A donor wrote to us: “I so appreciate all you do and have done, and your generosity is unprecedented. I am honored to be able to make a monthly contribution.” Another monthly donor says: “Thank you for everything CC Watershed does. We are able to add so much solemnity to Holy Mass due to the resources made available here.” Can you spare a few dollars each month to help us survive?
    —Corpus Christi Watershed
    Dom Pothier • Photo from 1904
    Dom Paul Cagin, in a 1904 publication (L’oeuvre de Solesmes dans la restauration du chant grégorien) made sure to include a beautiful image of Dom Pothier, the legendary abbot of St-Wandrille. Also shown is a very young Dom André Mocquereau. Auguste Pécoul—considered the spiritual “son” of Abbat Prosper Guéranger of Solesmes—wrote as follows on 24 June 1901: “To forestall any confusion, let us remember that there is just one Gregorian notation—that restored, according to the ancient manuscripts, by the eminent Abbot of Saint-Wandrille, Dom Pothier.” ✠
    —Jeff Ostrowski
    PDF • “3-Voice Motet” (Father De Laet)
    I believe 99% of our readers will recognize this hymn tune. Perhaps Father Edgard De Laet should have called it a ‘hymn’ instead of a ‘motet for three voices’—but he’s technically correct, since MOTET is defined as: “a short piece of sacred choral music, typically polyphonic and unaccompanied.” The even verses are for three voices, as you will see if you download the PDF score at #20245. The odd verses may be song a cappella SATB or unison with organ.
    —Jeff Ostrowski

Quick Thoughts

    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
    “Reminder” — Month of January (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. Signing up couldn’t be easier: simply scroll to the bottom of any blog article and enter your email address.
    —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

“Latin has been the language of the Latin liturgy for 1,600 years. It is a sign and source of unity as well as a defense of doctrine, not because of the language so much, but because it is a language no longer subject to changes. There are so many beautiful texts which can never have the same effectiveness in translation. Lastly, Latin is bound to an extremely precious heritage of melody, Gregorian chant and polyphony.”

— Cardinal Antonelli (Secretary of the Conciliar Commission on the Liturgy)

Recent Posts

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  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”

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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.