The rumors were true: Eminem joined 50 Cent to recreate “Get Rich or Die Tryin'” Friday night at South By Southwest. It was a throwback to the heyday of gangster rap at the music conference and festival as 50 Cent hit the stage at the Shady Records showcase in a camouflage bullet-proof vest and a Yankees cap as clouds of chronic floated through the air. With a seven-piece band and MC Tony Yayo at this side, he laid down the 16 game-changing tracks from “Get Rich,” performing the entire album live for the first time. “It's been a minute,” he told the crowd of about 2,000 at the Austin Music Hall and an audience watching via Fuse and YouTube. “It's been 10 years. That album sold 13 million copies. Damn.” The album came out in February 2003, with Eminem and Dr. Dre serving as executive producers and featured rappers.