In 1980, Paco de Lucia and Al di Meola collaborated and produced an ensemble track composed of Di Meola's "Mediterranean Sundance" from his 1977 album Elegant Gypsy with "Río Ancho". It was performed live in San Francisco on December 5, 1980, and the set was released by Columbia as Friday Night in San Francisco. (Wikipedia) Paco is the king of flamenco and wrote far more complex music than Rio Ancho. But this is a great tune to understand some basics of what flamenco is about.