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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

Sacred Music Colloquium XXV — Update II

Andrew Leung · June 30, 2015

CTL Colloquium 3 E JUST FINISHED the second day, or the first full day, of the Sacred Music Colloquium. A normal Colloquium day basically starts with Lauds at 8am followed by the Solfege warmup. And then we break into seven chant choirs for the morning chant session. After that is the breakout sessions with various topics. The plenary session was given by Fr. Jonathan Robinson after lunch and followed by the polyphony rehearsal. Then the day ends with Mass, dinner and Compline.

This morning, I went to the first chant rehearsal. I am very blessed to be able to join Dr. William Mahrt’s Chant Improvisation Choir. I am not going to go into the methods of chant improvisation here. If you want to know more about that, consider participating in the Colloquium next year in St. Louis from June 20 to June 25.

Dr. Mahrt is such a knowledgeable man and I learned something interesting in his class today: singing the ninefold Kyrie in the Ordinary Form Mass. In the Ordinary Form, Kyrie is supposed to be sixfold (Kyrie-Kyrie, Christe-Chrite, Kyrie-Kyrie). However, the ninefold Kyrie (Kyrie-Kyrie-Kyrie, Christe-Christe-Christe, Kyrie-Kyrie-Kyrie) may be used due to musical concerns. Some of the Kyries, like Kyrie III, in the Graduale Romanum have to be sung in ninefold. Dr. Mahrt said that the ninefold Kyrie helps the congregation to learn the Ordinary quicker and encourages the external participation. And of course, the number, “3”, represents the Holy Trinity.

Fr. Jonathan Robinson, the superior of the Oratory of St. Philip Neri in Toronto, gave a very good talk after lunch. He talked about the importance of beauty. We must bring people to the truth through beauty and it is our responsibilities, as Catholic musicians, to make sacrifices to preserve beauty. Now, I would like to write a little bit about the inspiring talk by another priest, Fr. Robert Pasley.

Fr. Pasley is the chaplain of the Church Music Association of America and he gave his annual Chaplain Talk after dinner tonight. In his talk, he encouraged those who are participating at the Colloquium for the first time to be open to some traditional practices in the Liturgy: celebrating the Mass ad orientem, receiving Communion on the tongue while kneeling at the altar rail, etc.. Through participating in both Forms of the Mass, we can see the mutual enrichment between the two Forms. We can see the differences and similarities between the Ordinary Form and the Extraordinary Form. It is very important for church musicians to know and understand both Forms of the Mass. We need to know the Vetus Ordo because the Church had been celebrating it for hundreds of years and it helps us understand the origin of the Novus Ordo. And I think knowing the Novus Ordo is just as important. It is the Form that is being said more widely in the Church. We must read the documents and understand it in light of Tradition. Knowing the Liturgy, the fullness of Roman Rite, is an essential part of being an excellent church musician.

And here is a video from the English Novus Ordo Mass taken by Ben Yanke.

Lord, Make Me to Know Thy Ways by William Byrd, directed by Dr. Horst Buchholz

Opinions by blog authors do not necessarily represent the views of Corpus Christi Watershed.

Filed Under: Articles Last Updated: January 1, 2020

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About Andrew Leung

Andrew Leung currently serves the music director of Vox Antiqua, conductor of the Cecilian Singers, and music director at Our Lady of China Church.—(Read full biography).

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President’s Corner

    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
    PDF Download • “Hymn for 2 Voices”
    Readers who click on this video will see that it starts with verses of the “Pange Lingua” hymn by Saint Thomas Aquinas (d. 1274) arranged for two voices. However, there’s a polyphonic refrain (“Tantum Ergo”) for three voices, taken from Kevin Allen’s Motecta Trium Vocum. If your choir is very small, this piece is for you! You can download the PDF score free of charge—and you can also utilize the rehearsal videos for each individual voice—by navigating yourself to #20323.
    —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

“…it would be a very praiseworthy thing and the correction would be so easy to make that one could accommodate the chant by gradual changes; and through this it would not lose its original form, since it is only through the binding together of many notes put under short syllables that they become long without any good purpose when it would be sufficient to give one note only.”

— Zarlino (1558) anticipating the Medicæa

Recent Posts

  • Dom Pothier • Photo from 1904
  • PDF Chart • “Plainsong Rhythm”
  • PDF • “3-Voice Motet” (Father De Laet)
  • PDF Download • “Hymn for 2 Voices”
  • (January 2026) • “Children Singing Plainsong”

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