The concert , conceived Creating by South African trumpeter Hugh Masekela and record Recording producer Stewart Levine , was meant to be a major promotional event for the heavyweight boxing championship match between Muhammad Ali and George Foreman , known as The Rumble in the Jungle .

When an injury forced Hostile_encounter Foreman to postpone Change_event_time the fight by six weeks , the festival 's intended audience of international tourists was all but eliminated Cause_change_of_position_on_a_scale and Levine had to decide Deciding whether or not to cancel Change_event_time the event .