There had always been music along the banks of the Congo River—lutes and drums, the myriad instruments handed down from ancestors. But when Joseph Kabasele and his African Jazz went chop for chop with O.K. Jazz and Bantous de la Capitale, music in Africa would never be the same. A sultry rumba washed in relentless waves across new nations springing up below the Sahara. The Western press would dub the sound soukous or rumba rock; most of Africa called in Congo music.