Michael Joncas actually has a lovely tune he wrote for it - it's in the third edition of the Canadian hymnal, but is copyrighted.

OK, I will do it to Jesu Dulcis Memoria.
Does anyone have harmonization for this lovely melody. SATB that would also be willing to type set for me. I will be using this for our Altar Lighting and Church Lighting ceremony for our Dedication Mass.

There is a beautiful SATB hymn-tune setting of this at no. 176 in The Hymnal 1940. The tune is Nunc Dimittis, by Louis Bourgeois. The text is 3rd century Greek, Phos hilaron (literally, 'O hilarious light!'), and is translated as 'O gladsome light...' This is, in fact, one of the very earliest of Christian hymns that have come down to us.

Btw, the Robert Bridges translation, as usual, is looser but much more poetic than the more customary LM O Radiant Light translation.

Notice that the Trinitarian invocation is in the second rather than the final verse.

O gladsome Light, O grace
of God the Father's face,
the eternal splendor wearing;
celestial, holy, blest,
our Savior Jesus Christ,
joyful in thine appearing.

Now, ere day falleth quite,
we see the evening light,
our wonted hymn outpouring;
Father of might unknown,
thee, his incarnate Son,
and Holy Spirit adoring.

To thee of right belongs
all praise of holy songs,
O Son of God, Life-giver;
thee, therefore, O Most High,
the world doth glorify,
and shall exalt for ever.

Norah Duncan's BOOTS (LM) is found in the Lead Me, Guide Me, second edition hymnal (GIA) at no. 11. You can view it by clicking https://www.onelicense.net/index.cfm?go=main.preview, then searching for "O radiant light" and then clicking "preview" on the fourth result.

I would add to Kathy's comment on "the more customary LM O Radiant Light translation" (by William Storey) that it is, to me, sub-par. It has more imperfect rhymes than perfect ones, and the doxological stanza is somewhat confusing (or confused) IMO.

But I certainly would not push the Robert Bridges text as a replacement. "Falleth quite" does not fall quite right to someone who does not live at Downton.

I much prefer Sylvia Dunstan's (blank verse) "O Laughing Light, O Firstborn of Creation" (11 11 11 5). It appears with my tune DUNSTAN NEW in GIA's hymn collection Assembled for Song: An Anthology of New Hymns (GIA, 2011). It can also be sung to ISTE CONFESSOR, but, IMO, that tune does not handle well a slight glitch in the meter (on "universe") in stanza 3.

Type in "O Laughing Light" at https://www.onelicense.net/index.cfm?go=main.preview and click "preview" on the first result.

Noel, if you are referring to the Sylvia Dunstan text for which I composed a new tune, you can find it by clicking https://www.onelicense.net/index.cfm?go=main.preview, then searching for "O laughing light" and then clicking "preview" on the first result.

If you are referring to my own (LM) Spanish text, you can find it by clicking https://www.onelicense.net/index.cfm?go=main.preview, then searching for "Oh luz de gozo" and then clicking "preview" on the first result.

My translation was intended to be similar to Storey's English text. Consequently it is in LM. A word-by-word translation back into English would be:

O light of joy and splendor,
You proceed from the inmortal God:
Most holy, happy Jesus,
Heavenly image of the Father.

"You are worthy of all honor,"
Your saints sing without ceasing.
Jesus, creator of life,
The world renders you its praising.

In this evening light,
Lord, we sing with one voice:
"O Father, Son, Spirit,
Glory to you, triune God."

I would add to Kathy's comment on "the more customary LM O Radiant Light translation" (by William Storey) that it is, to me, sub-par. It has more imperfect rhymes than perfect ones, and the doxological stanza is somewhat confusing (or confused) IMO.

But I certainly would not push the Robert Bridges text as a replacement. "Falleth quite" does not fall quite right to someone who does not live at Downton.

Let's all keep in mind that the facile critic of these classic translations is the editor who approved Silence, Frenzied, Unclean Spirit's frenetic ride into yet another hymnal.

The doxological verse, in this hymn, belongs in the middle. Sometimes we can actually learn from the Tradition.

What, pray, is wrong with 'falleth quite'?
I should think that anyone who faults it
Would have a countenance deeply roseate,
and a tongue quivering with nervous regrets
over his (or her) want of locutionary grace.

The doxology to the Lord’s Prayer was introduced to the Roman Rite after Vatican II as an accretion borrowed from the Eastern tradition, which is where the Anglican reformers got it in the first place.

It is not in the older form. And for what it is worth, the doxology bugs me, and I realize whenever it is done in Latin that the addition is wrongfooted.

It's in one of the gospels and not in another, my memory slips as to which at this moment. So they are both quite equally biblical. Neither is inherently Protestant or Catholic. A more interesting question would be 'what, when, and why was the embolism added'. We had the customary not-strictly-Protestant doxology (without embolism) to our Lord's Prayer in the ordinariate's liturgy, but our more recent revisions have placed the embolism in its customary place. But we do say 'For thine is the kingdom, and the power and the glory...', which, if you ask me, is far more potent and seemly than 'For the kingdom the glory and the power are yours....'. Not at all wishing to be snide, it seems to me that Catholics just really don't have a way with words in English.

It's in one of the gospels and not in another

It's found in some manuscripts of Matthew's Gospel, but not in the oldest ones. It is also found in the Didache, which is closely related to Matthew's Gospel.