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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 · September 28, 2017

Video • All Priests Should Learn Traditional Latin Mass

An interview with Archbishop Alexander Sample of Portland, Oregon.

Andrew Leung · September 21, 2017

The New Way of the “Sistina”

Msgr. Massimo Palombella introducing the new way of singing of the Pope’s choir.

Andrew Leung · September 7, 2017

Report • Hong Kong Summer Choral Workshops

Two choral workshops for church choirs were held in Hong Kong over the summer.

Andrew Leung · August 25, 2017

Report • Summer Sacred Music Workshop 2017

About 65 musicians attended the Summer Sacred Music Workshop III and the next annual workshop is already in planning!

Andrew Leung · August 10, 2017

Learn From Children Choristers

We church musicians are called to be more childlike than other musicians.

Andrew Leung · August 1, 2017

In Defense of the “Sistine Screamers”

There are a few things I would like to point out in defense of their old choral approach.

Andrew Leung · July 20, 2017

Recording • Choral Mattins with John Rutter

Here is some great church music coming from the Anglican Cathedral of Hong Kong

Andrew Leung · July 13, 2017

Singing with John Rutter

Rutter: “When they join together, they become one; and they share an experience which they couldn’t have on their own.”

Andrew Leung · July 6, 2017

The Most Sensitive Musical Instrument

“Have you thanked God for this failure already?”

Andrew Leung · June 29, 2017

Summer Sacred Music Workshop 2017

Southeastern Sacred Music (CMAA) presents: Summer Sacred Music Workshop 2017

Andrew Leung · June 8, 2017

Live Recording from Macau Cathedral

A Live recording of early Renaissance music from the Far East!

Andrew Leung · May 11, 2017

Church Musicians are called to be Good Shepherds

Not only priests, church musicians are also called to be good shepherds after the example of Christ.

Andrew Leung · May 4, 2017

Why the Pipe Organ?

Why is the pipe organ to be held in high esteem?

Andrew Leung · April 27, 2017

2nd Macau International Choir Festival

Register before August 20 to participate in the 2nd Macau International Choir Festival

Andrew Leung · April 6, 2017

It is Finished

What can a musician learn from the last words of our crucified King?

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Corpus Christi Watershed

President’s Corner

    Which Mass?
    In 1905, when the Vatican Commission on Gregorian Chant began publishing the EDITIO VATICANA—still the Church’s official edition— they assigned different Masses to different types of feasts. However, they were careful to add a note (which began with the words “Qualislibet cantus hujus Ordinarii…”) making clear “chants from one Mass may be used together with those from others.” Sadly, I sometimes worked for TLM priests who weren’t fluent in Latin. As a result, they stubbornly insisted Mass settings were ‘assigned’ to different feasts and seasons (which is false). To understand the great variety, one should examine the 1904 KYRIALE of Dr. Peter Wagner. One should also look through Dom Mocquereau’s Liber Usualis (1904), in which the Masses are all mixed up. For instance, Gloria II in his book ended up being moved to the ‘ad libitum’ appendix in the EDITIO VATICANA.
    —Jeff Ostrowski
    Like! Like! Like!
    You won’t believe who recently gave us a “like” on the Corpus Christi Watershed FACEBOOK PAGE. Click here (PDF) to see who it was. We were not only sincerely honored, we were utterly flabbergasted. This was truly a resounding endorsement and unmistakable stamp of approval.
    —Jeff Ostrowski
    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

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

Ronald Knox explained why the Modernists do not compose hymns: “Birds of prey have no song.”

— Fr. George William Rutler (2016)

Recent Posts

  • Which Mass?
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  • PDF Download • “Pange Lingua” in Simple (Contemporary) Polyphony for Three Voices
  • PDF Download • “Gregorian Chant Booklet” mailed by Pope Saint Paul VI to every bishop
  • My Response Surprised A Parishioner ‘Upset’ About Latin

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