Sister Marie Keyrouz (also spelled "Kairouz") was born in Deir-El-Amar in Lebanon. Raised in the Maronite Church, she took holy orders in the Melchite (Byzantine Rite Catholic) Church. From an early age Keyrouz undertook several disciplines of study simultaneously, earning a joint doctorate in musicology and anthropology from the Sorbonne in Paris in 1991. Keyrouz has engaged in a lifelong quest for a variety of so-called "Oriental" Christian chants, mostly preserved in Greek and Arabic manuscript sources and through oral tradition. She brings to this area of study a detailed ...