For years I've been quite fond of this contemporary setting of the O Antiphons by David Haas. They are offered as the intercessions at Evening Prayer in his collection "Light and Peace." I think the melodies of the verses are light and engaging.
This video was uploaded just a few days ago, and although the performance has some miking mishaps, I think it's nonetheless easy to see that this could be an effective "bridge" piece towards chant, and an accessible and prayerful use of traditional texts in parishes.
Nathan Knutson, cathedral and diocesan director of sacred music, performing artist, father, lecturer on sacred music