Source: Bill McCay / Getty Before JAŸ-Z became a billionaire mogul, stadium-selling superstar, and one of the greatest MCs to ever touch a mic, he was a hungry artist trying to make people believe in his vision. Some of those early moments happened right in Philadelphia. As part of The Backstory Podcast’s exclusive “Road To Roots Picnic.” Reflecting on Hov’s longtime relationship with the city of Brotherly Love, Backstory Podcast host and SVP of…