Planet Hip-Hop is going down on August 4th. Moderated by Wall Street Journal culture editor Christopher John Farley, Chuck D, ?uestlove of the Roots, and rapper Bajah from Sierra Leone are special guests for this event. In this forum rappers and music moguls discuss why hip-hop has gone global—and where the music is heading next. The program is part of the The Wall Street Journal recently-launched series, “Summer Scoops: Live with the Wall Street Journal,” held this summer at Lincoln Center in New York City. Tickets to all events are on sale now at www.wsj.com/live