by Chris Nickson   Theres no doubt that Franco was, in every sense of the word, a big man in African music. Sometimes weighing in at 300 pounds, he also earned his nickname as The Sorcerer of the Guitar, making it sing like no one before, with effortless, fluid lines. Also an accomplished composer and vocalist, Francois Luambo Makiadi remains a towering figure even in death, probably the greatest the Congo (later Zaire) has ever produced, and as the leader of the long-running O.K. Jazz group, he was one of the fathers of the modern Congolese sound. Born in the rural village of Sona Bata, his family moved to the capital, Leopoldville, when he was still a baby. By the age of ten he was already the master of a homemade guitar in the Belgian colony. Within a few years he was exposed to both European music, from missionaries, and the Cuban sounds that began to spread like wildfire on the radio. He made his recording debut at 15 as part of the house...