Cuban Music is Spanish music upgraded with African influences (mostly Congolese and Yoruba Niegerian) plus a little French. This wonderful mixture was generated by the most unfortunate of human endeavours: the slave trade.
Cuban Son is the typical music from the Southernmost part of the island: el Oriente, where many people worked in the sugarcane fields. 
 Santiago de Congo
when Cuban Son meets Congolese  Rumba!