Standing behind her control tower with headphones around her neck, Saudi DJ Leen Naif segues smoothly between pop hits and club tracks for a crowd of business school graduates noshing on sushi. The subdued scene is a far cry from the high-profile stages –- a Formula 1 Grand Prix in Jeddah, Expo 2020 in Dubai -– that have helped the 26-year-old, known as DJ Leen, make a name for herself ...