“For Royal Headache’s serrated and honeyed debut, the Sydney rock'n'roll classicists took a day-and-a-half to record all of the instruments. The vocals, courtesy of a fellow known simply as Shogun, took eight months. They still sounded urgent, rather than fussed over, and conveyed the generous vigor and warmth that moves listeners first to melt and then to grasp for one word: soul. Stateside, the i”