Historically, the tech and music industries haven’t worked well together. But Guy Oseary, Troy Carter and Scooter Braun — three managers of top music acts Justin Bieber, Lady Gaga and Madonna, respectively — know that in today’s entertainment landscape, the two sides need learn how to play nice.

“We’re not in the music industry — we’re in the multimedia industry,” Braun said at our D: All Things Digital conference on Wednesday. And from Psy’s widely lauded viral YouTube videos to Justin Bieber’s massive Twitter following (not to mention his best-selling perfumes!), these music execs are certainly aiming for cross-platform. [AllThingsD]