Capoeira is a martial art developed by African-Americans in Brazil when they were imported as slaves.  Since slaves were not allowed to practice martial arts it is disguised as a dance form accompanied by music on traditional instruments (primarily various forms of percussion and strings) that allows practice in the movements and kicks that are used in the martial art.  In its modern version as practiced and taught by Jim it includes dance, music, serious conflict, and rehabilitation of injuries and handicaps through stretches and movements.  .