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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

Theology and Music

Dr. Lucas Tappan · June 28, 2016

LMT Thou Art Peter WOULD HAVE LOVED to have been at the CMAA Colloqium last week, but I spent that time teaching at Benedictine College’s summer Cathedral Program. For one week each summer a number of high school students make a pilgrimage to one of America’s great Catholic colleges (one can find it on the Newman Guide) for a week of prayer, study, work and fun. Each day students attend Holy Mass, pray the Rosary and learn how to—and pray—Lauds, Vespers and Compline. Mornings are usually spent studying theology, while the afternoons are dedicated to one of several specialized areas of learning. I was privileged to teach the voice track and thought I would share with you one of my presentations, which I used to show the students how music and theology work together.

I began by reading St. Matthew 16:13-19:

Now when Jesus came into the district of Caesarea Philippi, he asked his disciples, “Who do men say that the Son of man is?” And they said, “Some say John the Baptist, others say Elijah, and others Jeremiah or one of the prophets.” He said to them, “But who do you say that I am?” Simon Peter replied, “You are the Christ, the Son of the living God.” And Jesus answered him, “Blessed are you, Simon Bar-Jona! For flesh and blood has not revealed this to you, but my Father who is in heaven. And I tell you, you are Peter, and on this rock I will build my church, and the powers of death [the gates of Hades] shall not prevail against it. I will give you the keys of the kingdom of heaven, and whatever you bind on earth shall be bound in heaven, and whatever you loose on earth shall be loosed in heaven.”

I explained that Caesarea Philippi was quite a distance out of the way for Christ and His disciples, and besides, an orthodox Jew was unlikely to find himself in this city named in honor of Caesar Augustus by Herod Philip, where there was an enormous cave believed to be the gate to Hades and where the ancients worshiped Baal. This cave was formed in the side of an enormous cliff 100 feet high and 500 feet long, which had the appearance of a gigantic rock sitting atop the entrance to the underworld. In front of the cave was a temple dedicated to Caesar Augustus where pagan sacrifice took place, among other more bizarre rituals.

Standing in view of such a sight, Christ asks His disciples who they think He is, and St. Peter professes that He is the Christ, the Son of the Living God. The pagan gods surrounding Christ and His disciples are meaningless and utterly worthless, for here before them stands the true God, in the flesh. Christ then bestows the authority of His Kingdom on St. Peter, who is “rock” (an infinitely greater rock than the nearby cliff) and tells Peter that the “gates of Hades” will not prevail against him.

Then I showed the students a picture of the inside of the dome in St. Peter’s Basilica and the text inscribed around the base in letters as tall as a grown man,

TU ES PETRUS, ET SUPER HANC PETRAM AEDIFICABO ECCLESIAM MEAM,

ET TIBI DABO CLAVES REGNI CAELORUM


We know that St. Peter is buried beneath the papal altar under the dome of St. Peter’s, but even more importantly, that Pope Francis is the successor to St. Peter, who even today holds the keys to the Kingdom of Heaven as Christ’s Vicar on Earth. I shared that shortly after the election of Pope Benedict XVI in 2005, Cardinal George of Chicago looked pensively across the piazza where the obelisk from the Circus Maximus stood. Later a reporter asked him what he was thinking and he replied that while many dictators and rulers and nations had come and gone in the last 2000 years, Peter was still with us.

I then showed the students a video of Palestrina’s Tu es Petrus from Pope Francis’ first Mass in the Sistine Chapel, followed by a video of James MacMillan’s Tu es Petrus, sung during Pope Benedict’s Mass at Westminster Cathedral during his pastoral visit to England in 2010. Afterward we compared and contrasted these two versions and discussed how each composer brought out various aspects of the text from Sacred Scripture.

Palestrina’s version is calm and regal, perfectly at home in St. Peter’s Basilica. During the time of its composition the Church had entered the glorious period of the Counter Reformation and sought to re-establish Catholicism throughout Europe as well as take the Faith to the ends of the earth. It was a time when the Church was very sure of Herself and Her mission, united under Peter, to spread the Gospel.


MacMillan’s setting is very different and came out of a country where the Church had been persecuted unmercifully for 400 years, and where, one might say, it is entering a new persecution. Great Britain has been home to epic struggles for those remaining faithful to Christ and His Church. These struggles are very palpable in MacMillan’s Tu es Petrus. As one student commented, it sounded like the music from a battle scene in The Lord of the Rings. I would agree, and personally find this to be a fruitful exchange between the sacred and secular realms of music. In this particular work, the Petrine ministry is presented as a father who is prepared to enter the bowels of hell to fight for the souls of his children. There is nothing calm about it.


I hope and pray the Church continues to raise up true artists like Palestrina, Bach, Mozart, Durufle, MacMillan and many others who will bring the Gospel to the world through the greatest of all the Church’s arts—Music.

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 Dr. Lucas Tappan

Dr. Lucas Tappan is a conductor and organist whose specialty is working with children. He lives in Kansas with his wife and four children.—(Read full biography).

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President’s Corner

    PDF • “Music List” (4th Sunday of Advent)
    Readers have expressed interest in perusing the ORDER OF MUSIC I’ve prepared for 21 December 2025, which is the 4th Sunday of Advent (Year A). If such a thing interests you, feel free to download it as a PDF file. The ENTRANCE CHANT is the famous “Roráte Coeli” and the fauxbourdon setting of the COMMUNION is exquisite. As always, the Responsorial Psalm, Gospel Acclamation, and Mass Propers for this Sunday are available at the feasts website alongside the official texts in Latin.
    —Jeff Ostrowski
    PDF • Our Lady of Guadalupe (12 Dec.)
    The Responsorial Psalm may be downloaded as a PDF file (organist & vocalist) for 12 December, which is the Feast of Our Lady of Guadalupe. When it comes to the formulary for this Mass, it’s astounding how infrequently it’s included in official books. Prior to Vatican II, one had to search through “supplemental material” printed in the back of hand-missals and graduals. But since 1970, the feast is virtually nonexistent. According to the UNIVERSAL KALENDAR, 12 December is the “Feast of Saint Jane Frances De Chantal, Religious” (Die 12 decembris: S. Ioannæ Franciscæ de Chantal, religiosæ). Why should that feast overpower Our Lady of Guadalupe? In the United States, OLG is celebrated—and I’d assume in Mexico, Central America, South America, and Canada—but, as I said, the Propria Missae are virtually impossible to locate. I possess only three books which mention this feast.
    —Jeff Ostrowski
    Simplified Accompaniment (Advent Hymn)
    Many organists are forced to simultaneously serve as both CANTOR and ACCOMPANIST. In spite of what some claim, this can be difficult. I invite you to download this simplified organ accompaniment (PDF) which in the Father Brébeuf Hymnal is hymn #661: “Come, Thou Long-Expected Jesus” (for ADVENT). I’m toying with the idea of creating a whole bunch of these, to help amateur organists. The last one I uploaded was downloaded more than 2,900 times in a matter of hours—so there appears to be interest.
    —Jeff Ostrowski

Quick Thoughts

    PDF Download • “Santo Santo Santo”
    Those searching for a dignified, brief, simple, bright setting of SANCTUS in Spanish (“Santo Santo Santo”) are invited to download this Setting in honor of Saint John Brébeuf (organist & vocalist). I wonder if there would be any interest in me recording a rehearsal video for this piece.
    —Jeff Ostrowski
    Pope Leo XIV on Sacred Music
    On 5 December 2025, Pope Leo XIV made this declaration with regard to liturgical music.
    —Corpus Christi Watershed
    “Translations Approved for Liturgical Use”
    According to the newsletter for USSCB’s Committee on Divine Worship dated September 1996, there are three (3) translations of the Bible which can be used in the sacred liturgy in the United States. You can read this information with your own eyes. It seems the USCCB and also Rome fully approved the so-called NRSV (“New Revised Standard Version”) on 13 November 1991 and 6 April 1992 but this permission was then withdrawn in 1994.
    —Corpus Christi Watershed

Random Quote

And since it is becoming that holy things be administered in a holy manner, and of all things this sacrifice is the most holy, the Catholic Church, to the end that it might be worthily and reverently offered and received, instituted many centuries ago the holy canon, which is so free from error that it contains nothing that does not in the highest degree savor of a certain holiness and piety and raise up to God the minds of those who offer.

— Council of Trent (1562)

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