It was only a matter of time before the success of the Guitar Hero series led to spin-offs in other musical genres. Expanding into pop was easy, but hip-hop was more of a challenge. After all, when you hear the names of top hip-hop artists, a vision of those artists jamming with a guitar is not the first thing that pops into your head. So Activision instead turned their attention to the men and women behind the music, the DJs, and their instrument of choice, the turntable, and DJ Hero was born.