Here's another wonderful version, this time from Giovanni Vianini's Schola Gregoriana Mediolanensis:
The text comes from Psalm 25:3-4:
1 Unto thee, O LORD, do I lift up my soul.
2 O my God, I trust in thee: let me not be ashamed, let not mine enemies triumph over me.
3 Yea, let none that wait on thee be ashamed: let them be ashamed which transgress without cause.
4 Shew me thy ways, O LORD; teach me thy paths.
5 Lead me in thy truth, and teach me: for thou art the God of my salvation; on thee do I wait all the day.
6 Remember, O LORD, thy tender mercies and thy lovingkindnesses; for they have been ever of old.
7 Remember not the sins of my youth, nor my transgressions: according to thy mercy remember thou me for thy goodness' sake, O LORD.
I'm not sure what this is, but it does use the same text, at least to start out with. And I like the Colby Chorale ("Men, Women & Tangos"), don't you?
Last year I published all the Introits for the Sundays of Advent; here's a video (unavailable last year) of the Advent I Introit, Ad te, levavi, which also comes from Psalm 25:
Here is a post about the hymns of the Advent Office, also from last year.