SAN JUAN:- Ismael Quintana, the Puerto Rican composer and singer who became a pioneer of salsa music, has died in the United States, people close to the artist told AFP. He was 78. Known for hits such as ‘Puerto Rico,’ ‘Adoracion,’ ‘No se compara’ and ‘Maestro rumbero,’ he died in Colorado on Saturday after respiratory failure, the source said. Born in Ponce, Quintana played in quartets in his early career. In 1960 he joined forces with the beloved Eddie Palmieri, also from Puerto Rico, in the ‘Orquesta La Perfecta.’–AFP