Pusha T performs live at NPR Music's showcase at Le Poisson Rouge in New York City on Wednesday, Oct. 16. Loren Wohl for NPR hide caption

itoggle caption Loren Wohl for NPR

Le1f performs at NPR Music's 2013 SXSW Showcase at Stubb's. Adam Kissick for NPR hide caption

itoggle caption Adam Kissick for NPR

Calle 13 was formed by stepbrothers Eduardo Jose Cabra Marti­nez, who calls himself Visitante, and Rene Perez Joglar, who calls himself Residente. Ryan Muir for NPR hide caption

itoggle caption Ryan Muir for NPR