Andy Joung: “It [music] really helped me relieve stress. Whenever I produced music, I was writing a diary in a musical format.” By YASUTAKA TAMURAGlobal Business Journalism reporterEun Gyo Joung, known as Andy, looked up the ceiling, and took a deep breath. He was standing at the stage with other performers. The light was shed on them. The hall was warm. The sweats were on some performers’ f...