<DIV><P>Before there was hip hop, there was DJ Kool Herc. <P>On a hot day at the end of summer in 1973 Cindy Campbell threw a back-to-school party at a park in the South Bronx. Her brother, Clive Campbell, spun the records. He had a new way of playing the music to make the breaks—the musical interludes between verses—longer for dancing. He called himself DJ Kool Herc and this is <I>When the Beat Was Born</I>. From his childhood in Jamaica to his youth in the Bronx, here's how Kool Herc came to be a DJ, how kids in gangs stopped fighting in order to breakdance, and how the music he invented went on to define a culture and transform the world. </DIV>