A box set coming this summer from Cherry Red’s Robinsongs label will offer a deep dive into the storied career of one of hip-hop’s most important early influences: Grandmaster Flash & The Furious Five. The South Bronx group came together in the late ’70s as bold new types of music were coming out of Black neighborhoods in the boroughs. Turntablist Joseph “Grandmaster Flash” Sadler joined up with lyricists Melvin “Melle Mel” Glover, Keith “Cowboy” Wiggins, Nate “Kidd Creole” Glover, Eddie “Scorpio” Morris and Guy Todd “Raheim” Williams, quickly joining the upper ranks…