Salsa dancing originated in Cuba, where people would gather in casinos to dance to rhythms blending African drums and Spanish guitar. Cuban music spread to the US through radio and American tourists visiting Havana. The Palladium Club in New York popularized Latin styles like mambo. When relations with Cuba deteriorated, Puerto Rican and jazz musicians in New York kept Cuban styles alive by mixing them with their own. Salsa incorporated diverse influences as it spread globally and evolved into many regional styles danced to today.