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Books about Keyrouz:
Vox Sacra by Ancient Voices, Anonymous 4, Eo, Keyrouz  (0100)
SONGS OF EAST ` by SISTER MARIE KEYROUZ [Korean Imported] (2011) by SISTER MARIE KEYROUZ (0100)
Wiki information Keyrouz:
Sister Marie Keyrouz 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.