Sean “Diddy” Combs was once the life of the party. He was known for hosting lavish and exclusive gatherings in the Hamptons, having seemingly countless celebrity pals and toasting to the good life with powerful allies in the music industry. Yet a question remains as opening statements approach next week in his federal sex-trafficking trial: Why haven’t more of his famous friends come to his defense? “The music industry is fickle,” said Ramal “The Hometown Heat” Brown, a former hip-hop disc jockey at 105.3 KJAMZ in Tulsa, Oklahoma. “Everyone wants to be around when you’re on top.” Follow live updates...