Soeur Marie Keyrouz (Soprano)
Artist's website: http://www.keyrouz.com/
Sister Marie Keyrouz (also spelled "Kairouz") is a chanter of Oriental Church music, a member of the Congrégation des Soeurs Basiliennes Chouérites and founder-president of the National Institute of Sacred Music in Paris.
Read more at https://en.wikipedia.org/wiki/Marie_Keyrouz