More than any other form of music, hip-hop is and always has been about business — one of its earliest call-and-response chants was “Make money, money.” That hasn’t changed in the years between the genre’s inception in the early 1970s and today, when at least two rapper-entrepreneurs are billionaires. But while MCs might be the ones holding the mic, hip-hop would never have become such a culture-shifting force without smart, savvy and dedicated people making sure the music reaches ears.