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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

Laws of life

Andrew R. Motyka · October 9, 2013

hings have been quite hectic for the last couple of weeks, leading to my missing my scheduled post last week. Apologies all around. This week I would briefly like to focus on a brief prayer that my choir prays prior to each rehearsal and Mass. It is the RSCM Choristers’ Prayer, and I learned it while working with Charles Cole at the 2011 CMAA Colloquium in Pittsburgh:

Bless, O Lord, us Thy servants who minister in Thy temple. Grant that what we sing with our lips, we may believe in our hearts, and what we believe in our hearts, we may show forth in our lives. Through Jesus Christ our Lord, Amen.

According to the site linked above, the prayer has been almost unchanged since its origins as a blessing for cantors from the Fourth Council of Carthage (ca. 398). What I find particularly interesting about this prayer, though, is its simple articulation of an important concept in liturgical theology: lex orandi, lex credendi.

Lex orandi, lex credendi is a mnemonic for the idea that “the law of prayer is the law of belief.” Our liturgical prayer, in form and execution, bears heavily on our faith. This is why careful ars celebrandi (i.e., the style and reverence of sacramental celebration) is to be fostered. Irreverent treatment of the matters of liturgy will, over time, damage the faithful’s understanding and attitude toward sacred matter. As one of my graduate professors, Leo Nestor, used to say of careless and vapid musical choices: “That kind of music will rot your teeth and erode your faith.”

Likewise, a reverent ars celebrandi fosters a more healthy faith. When serious things are treated seriously by the priest, servers, choir, and other ministers, it has an influence on the way those things are treated by the faithful. What I also love about this prayer is continuation into the next part of the traditional principle: lex orandi, lex credendi, lex vivendi. Our law of prayer forms our law of belief, which forms our lives. Remember that the liturgy is not educational, but it is formative, so serious celebration and good musical choices will assist in the forming of the very lives of the faithful.

Again, as Dr. Nestor used to say, “Always be careful what words you put into the mouths of the people of God.” We should take that advice seriously.

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 R. Motyka

Andrew Motyka is the Archdiocesan Director of Liturgical Music and Cathedral Music for the Archdiocese of Indianapolis.—(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

“Although the Mass contains much instruction for the faithful, it has nevertheless not seemed expedient to the fathers that it be celebrated everywhere in the vernacular. The holy synod commands pastors and everyone who has the care of souls to explain frequently during the celebration of the Masses, either themselves or through others, some of the things that are read in the Mass, and among other things to expound some mystery of this most Holy Sacrifice, especially on Sundays and feastdays.”

— ‘Council of Trent, XII:8 (1562)’

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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