Caroline Prothero, who manages David Guetta, explained the persistence she needed in hooking him up with major R and B acts Stateside.

"It has been a challenge and I've not had much of a social life over the past year," she explained. "Last year was a quantum leap for both David Guetta and me. I spent 18 hours a day working, I was on the plane backwards and forwards. But it was all about nurturing other people."

Prothero added that ...