The tune is an 8th century Irish tune called "Slane." That tune has reference to Slane Hill where in 433 A.D. St. Patrick defied the pagan High King of Tara by lighting candles on Easter Eve. The king was so impressed by St. Patrick's defiance, that he allowed him to continue his ministry.
The arrangement of this piece that our choir is singing is by Dan Forrest, one of my new favorite composers. I just love the way he conveys the simple beauty of the melody in this piece, and I love how he adds open fourths in the harmony that keeps the historic feel of the melody, but also adds some great dissonance that makes it an aurally rich experience. Here is a link to a recording of the piece, primarily for the benefit of the choir, but anyone will enjoy it I'm sure. (This link takes you to Dan Forrest's choral library. You have to scroll down almost to the bottom of the page to find this title.)
The words are lovely. They portray a strong devotion to Christ and a make me feel an increased desire to know Him better, to serve Him better, and to make Him a greater and greater part of my life. In particular I like the many different names by which we refer to the Savior in this song. Some of them are quite thought provoking: Vision, Best Thought, Light, Wisdom, True Word, Great Father, Inheritance, High King of Heaven, Treasure, O Bright Heavn's Son, Heart of my own heart, Ruler of All.
Our Savior, Jesus Christ, is known by many names. And it is only through His name that we may hope to obtain salvation. Mosiah 3:17 "And moreover, I say unto you, that there shall be no other name given nor any other way nor means whereby salvation can come unto the children of men, only in and through the name of Christ, the Lord Omnipotent." (emphasis added)
Be Thou My Vision
Be Thou my Vision, O Lord of my heart;
Nought be all else to me, save that Thou art-
Thou my best thought, by day or by night,
Waking or sleeping, Thy presence my light.
Be Thou my Wisdom, and Thou my true Word;
I ever with Thee and Thou with me, Lord;
Thou my great Father, I Thy true son;
Thou in me dwelling, and I with Thee one.
Riches I heed not, nor man's empty praise,
Thou mine inheritance, now and always:
Thou and Thou only, first in my heart,
High King of heaven, my Treasure Thou art.
High King of heaven, my victory won,
May I reach heaven's joy, O bright heaven's Sun!
Heart of my own heart, whatever befall,
Still be my Vision, O ruler of all.
I'm also including the original English translation because it's a step closer to the original Irish text than this setting that has been put into verse and it could help us understand a little better some of the original intent of the poem.
English Translation
by Mary Byrne, 1905
Be thou my vision O Lord of my heart
None other is aught but the King of the seven heavens.
Be thou my meditation by day and night.
May it be thou that I behold even in my sleep.
Be thou my speech, be thou my understanding.
Be thou with me, be I with thee
Be thou my father, be I thy son.
Mayst thou be mine, may I be thine.
Be thou my battle-shield, be thou my sword.
Be thou my dignity, be thou my delight.
Be thou my shelter, be thou my stronghold.
Mayst thou raise me up to the company of the angels.
Be thou every good to my body and soul.
Be thou my kingdom in heaven and on earth.
Be thou solely chief love of my heart.
Let there be none other, O high King of Heaven.
Till I am able to pass into thy hands,
My treasure, my beloved through the greatness of thy love
Be thou alone my noble and wondrous estate.
I seek not men nor lifeless wealth.
Be thou the constant guardian of every possession and every life.
For our corrupt desires are dead at the mere sight of thee.
Thy love in my soul and in my heart --
Grant this to me, O King of the seven heavens.
O King of the seven heavens grant me this --
Thy love to be in my heart and in my soul.
With the King of all, with him after victory won by piety,
May I be in the kingdom of heaven O brightness of the son.
Beloved Father, hear, hear my lamentations.
Timely is the cry of woe of this miserable wretch.
O heart of my heart, whatever befall me,
O ruler of all, be thou my vision.