CHICAGO HIPHOP>> O.T.B reinvents drill music with new mixtape "Before Oppz"

The city of Chicago has been a haven for hip hop talent for over the past 25 years. The windy city has brought such legends as Common, Twista, and Kanye West to the new innovators like Chance the Rapper, Chief Keef, and Famous Dex. Now, the Chi represents the homebase for a n…