Infrequent contributor to this forum, Felipe Gasper, passed these off to me a number of years ago. He's been sitting on them for quite a while, until I finally brow-beat him into sharing them:

Introit hymns for Advent.

I took the psalm verses from Brady and Tate (online), with some modifications, and removed “thou” - thankfully, this didn’t cause problems.

Sung either to VENI EMMANUEL or CONDITOR ALME.

ADVENT 1

ANTIPHON (Ps. 25):
To You, O God, I lift my soul:
Let not my foes put me to shame.
Let no disgrace or scorn attend
Those who, O Lord, trust in Your name.

To me, O Lord, Your truth impart,
and lead me in Your righteous way;
For You are my salvation, Lord,
On You I wait all through the day.

(optional)
Your mercies and Your wondrous love,
O Lord, forever bear in mind;
And graciously continue still,
as You were ever, good and kind.

Praise Father, Son, and Holy Ghost,
To God we sing now and again;
From now unto eternity,
With all the heav’nly host. Amen.

ADVENT 2

ANTIPHON (cf. Is. 30:19,30, Ps. 80):
O Zion’s people, God shall come:
All earth shall know His glorious voice.
The Lord will come and save His flock;
Your hearts shall truly then rejoice.

O Israel’s Shepherd, Joseph’s Guide,
Our prayers to You vouchsafe to hear;
You who do on the cherubs ride,
Again in solemn state appear.

(opt.)
Behold, how Benjamin expects,
with Ephraim and Manasseh joined,
In our delv’rance, the effects
of Your resistless strength to find.

dox. & ant.

ADVENT 3

ANTIPHON (Phil. 4:4-6; Ps. 85):
Rejoice in God, again, rejoice!
Your kindness shall all men declare.
The Lord is near: be still, give thanks
Unto your God who hears your prayer.

Lord, You have granted to Your land
the favors that mankind implored,
And faithful Jacob’s captive race
have You now graciously restored.

(opt.)
Your people’s sins You have absolved,
and all their guilt have now defaced;
You have not let Your wrath flame on,
nor let Your fearsome anger last.

dox. & ant.

ADVENT 4

ANTIPHON (Is. 45:8; Ps. 19):
Like dew from heav’n, let justice come,
O let it rain down from the skies!
The earth shall open, all shall see;
Our glorious Savior shall arise.

The heav’ns declare Your glory, Lord,
Which all creation could not fill;
The firmament and stars express
Their great Creator's glorious skill.

(opt.)
The dawn of each returning day
fresh beams of wondrous knowledge brings;
From darkest night’s successive rounds
Divine instruction surely springs.

dox. & ant.

IMMACULATE CONCEPTION

ANTIPHON (Is. 61:10, Ps. 30):
In God is all my soul’s delight.
He clothed me with salvation’s love
And wrapped me, like a bride adorned,
With truth and justice from above.

I shall proclaime Your praises, Lord,
Who did Your wondrous pow’r employ
To raise up my sore drooping head,
And check my foes’ insulting joy.

(opt.)
In my distress, I cried to You,
Who kindly did my grief relieve,
And from the grave’s expecting jaws
My hopeless life from there retrieve.

dox. & ant.

(I believe he has more for the church year; I'll try to shake them out of him.)