When Korn released its debut album in 1994, the emotional rawness and hip-hop undertones sparked talk of the birth of a unique genre, “nu metal.” More than two decades on, nu metal may no longer be new, but Korn remains prolific, with a fresh tour starting Thursday and an album in the works for next year. Singer Jonathan Davis, famed for his intense performances, said there was a simple reason for his robust output - music, for him, is therapy. “I’m going crazy. I’ve been at home for a while, we haven’t been playing much, and I need my therapy,” Davis told AFP.–AFP