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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

    PDF Download • “Organ Accompaniment”
    Over the past few years, I’ve been harmonizing all the vernacular plainsong Introit settings by the CHAUMONOT COMPOSERS GROUP. This coming Sunday—10 May 2026—is the 6th Sunday of Easter (Year A). The following declaration will probably smack of “blowing my own horn.” However, I’d rank this accompaniment as my best yet. In this rehearsal video, I attempt to sing it while simultaneously accompanying myself on the pipe organ. The musical score [for singers] as well as my organ accompaniment can be downloaded free of charge from the flourishing feasts website.
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 4 May 2026
    A few days ago, the CORPUS CHRISTI WATERSHED Facebook page posted this Gregorian Chant quiz regarding a rubric for the SEQUENCE for the feast of Corpus Christi: “Lauda Sion Salvatórem.” There is no audience more intelligent than ours—yet surprisingly nobody has been able to guess the rubric. Drop me an email with the right answer, and I’ll affirm your brilliance to everyone I encounter!
    —Jeff Ostrowski
    “Rare Photographs” • Hannibal Bugnini
    On 2 September 2025, we included in this article extremely rare photographs of Archbishop Hannibal Bugnini taken in Iran circa 1979. Bugnini had initially been banished by the pope to Uruguay, but he refused to obey. [This is interesting, since Bugnini relied upon ‘blind obedience’ when it came to modifications of the ancient liturgy.] After he refused to obey the order from the pope, Hannibal Bugnini was banished to Iran. You can also watch a short video of Hannibal Bugnini in Iran, dated 10 November 1979. That’s about a week after the USA embassy hostage crisis began in Tehran, and Pope Saint John Paul II had sent the leader of the Iranian Revolution a special letter.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Anima Christi”
    I received a request for an organ accompaniment I created way back in 2007 for the “Anima Christi” Gregorian Chant. You can download this PDF file which has the score in plainsong followed by a keyboard accompaniment. Many melodies have been paired with “Anima Christi” over the centuries, but this is—perhaps—the most common one.
    —Jeff Ostrowski
    PDF • “Liturgical Law” (467 Pages)
    On Good Friday during the middle ages, the pope privately recited THE ENTIRE PSALTER. If you don’t believe me, see for yourself by reading this passage by Dom Charles Augustine Bachofen (d. 1943). His famous book—called “Liturgical Law: A Handbook Of The Roman Liturgy”—was published by the Benjamin Herder Book Company, which was the American arm (operating out of St. Louis, Missouri) of one of the world’s most significant Catholic publishers. Dom Charles Augustine Bachofen was born in Switzerland but spent his career between the Benedictine monasteries at Conception (Missouri) and Mount Angel (Oregon). His 1931 masterpiece, Liturgical Law can be downloaded as a PDF file … 467 pages!
    —Jeff Ostrowski
    “Gregorian Chant Quiz” • 24 March 2026
    How well do you know your Gregorian hymns? Do you recognize the tune inserted into the bass line on this score? For many years, we sang the entire Mass in Gregorian chant—and I mean everything. As a result, it would be difficult to find a Gregorian hymn I don’t recognize instantly. Only decades later did I realize (with sadness) that this skill cannot be ‘monetized’… This particular melody is used for a very famous Gregorian hymn, printed in the LIBER USUALIS. Do you recognize it? Send me an email with the correct words, and I promise to tell everybody I meet about your prowess!
    —Jeff Ostrowski

Random Quote

“The Pope is not an absolute monarch whose thoughts and desires are law. On the contrary: the Pope’s ministry is a guarantee of obedience to Christ and to his Word. He must not proclaim his own ideas, but rather constantly bind himself and the Church to obedience to God’s Word, in the face of every attempt to adapt it or water it down, and every form of opportunism.”

— ‘His Holiness, Pope Benedict XVI (11 May 2005)’

Recent Posts

  • PDF Download • “Organ Accompaniment”
  • “Gregorian Chant Quiz” • 4 May 2026
  • “Rare Photographs” • Hannibal Bugnini
  • “Regina Caeli” • More Than You Wanted To Know
  • Music List • “5th Sunday of Easter” (Year A)

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