Paco de Lucia, considered by his fans and critics to be the world's greatest flamenco guitarist, died Wednesday in Mexico of a heart attack. The 66-year-old musician was a modern superstar in a Roma, or Gypsy, tradition that is hundreds of years old. To the world's flamenco fans, de Lucia's story is well-known. He was born Francisco Sanchez Gomez in 1947 and was exposed to the flamenco culture in his home of Andalusia, the cradle of Roma tradition in southern Spain. His father and two of his brothers were flamenco musicians and inspired him to take up the guitar at...