The "Rumble in the Jungle" pitted boxer Muhammad Ali against heavyweight champion George Foreman in Zaire—now the Democratic Republic of the Congo. The match is remembered for Ali's incredible performance in regaining the heavyweight title. Surrounded by spellbound fans, he used a strategy later dubbed the "rope-a-dope" to tire Foreman before winning in the eighth round. This fight was Don King's first major venture as a professional boxing promoter. What musical acts were booked for the event?