 In South America, where the Colombian Cumbia most easily expanded in popularity, different "modern" styles of the original Colombian rhythm were started mainly in the countries of Peru, Ecuador and Bolivia.The Peruvian cumbia, developed in the early 1960s, used electric guitars and synthesisers along with the other classical instruments of the Colombian cumbia in order to create a kind of tropical sound.Variations within the Peruvian cumbia added more tropical rhythms along with a more Andean flavor, which eventually resulted in the creation of the Andean cumbia (Commonly called "Chicha music" in Peru).