It's been a quarter century  since Paco de Lucia jammed Spain's airwaves with his off-the-cuff rumba improv "Entre Dos Aguas." A last-minute "radio cut" thrown onto his classic flamenco guitar recording Fuente y Caudal, "Entre Dos Aguas" marked the first time that a flamenco instrumental reached such a large audience. It was constantly heard on radio and television and in clubs and discotheques, and it was a favorite of millions who had never thought about listening to flamenco or the guitar. De Lucia's hit was, fortunately, not a flash in the pan of the recording industry machinery, but rather a magical door into the world of one of the most brilliant guitarist ever to pick up the instrument.