sentences:  Even after slavery was abolished in Cuba, there still remained social and racial inequality, which Afro-Cubans dealt with by using rumba's music and dancing as an outlet of frustration.Because Afro-Cubans had fewer economic opportunities and the majority lived in poverty, the style of dance and music did not gain national popularity and recognition until the 1950s, and especially after the effects of the 1959 Cuban Revolution, which institutionalized it.The first commercial studio recordings of Cuban rumba were made in 1947 in New York by Carlos Vidal Bolado and Chano Pozo for SMC Pro-Arte, and in 1948 in Havana by Filiberto Sánchez for Panart.