Obey Your Master

The light in his eyes, his rapt stage-ward gaze, tells you everything. High in the thundering tiers of a Canadian hockey rink, the young metalhead is serenely out of his mind. Surrounded by nutters, he is still: He yells not, neither does he fist-pump. Decibels clang, adrenaline torches the air, but this kid has entered the deep and resonant chamber of metallic peace, where the inner pressure is...