Double bassist and composer Cachao Lopez was one of the greatest personalities in the history of Cuban music. A true innovator who already in the 40's pioneered a new exciting form of dance music subsequently worldwide known as mambo. "Cuban Music in Jam Session'' stands as one of his classic albums from the late 50's. A great example of Cachao's innovative jam sessions called "descargas" where various legendary musicians such as tenor sax player Emilio Penalver and trumpeters Armando "Chocolate" Armenteros and Alejandro "Negro" Vivar, improvise over highly infectious grooves and rhythms laid down by Cachao himself on bass and a bunch of super tight percussionists. A great statement from the latin music golden era!