... IS A JAM SESSION DEVELOPED IN HAVANA DURING THE 1950S AND CONSISTING OF CUBAN MUSIC VARIATIONS AS SON MONTUNO, BUT ALSO GUAJIRA, GUARACHA, BOLERO AND RUMBA. FROM THE 1960S, THE DESCARGA FORMAT WAS USUALLY ADAPTED BY LARGE SALSA ENSEMBLES, MOST NOTABLY BY FANIA ALL-STARS.