Try the music of Hildegard Von Bingen: 11,000 Virgins by the Anonymous 4 (females) on Harmonia Mundi. She was a 12th Century abbess who was a poet and composer. The music is chants about the legend of St. Ursula and the Eleven Thousand Virgins. The singing is ethereal with a crystalline clarity.
Choral Music Suggestions
I'm interested in trying some well recorded choral music in SACD, CD or LP format. I listen to baroque and classical music but do not have any experience with choral works. I think I would prefer smaller scale works from the same periods (or even early music) rather than large scale more modern works. Can you help me get started with some suggestions?