After a demo for Detox hit the Internet earlier this month, there was rampant speculation that Ludacris was ghostwriting for Dr. Dre. Luda goes on the record to address the rumors.“It was for Dre. I wrote it for Dre,” Luda tells Rap-Up.com of the leaked song “O.G.’s Theme,” which finds him rapping, “Ain’t no ni**a [...]