In a hall on Japan’s Sado island, 71-year-old Yoshikazu Fujimoto strikes the imposing drum mounted before him, producing a boom so powerful that it reverberates through the floorboards. Fujimoto is a veteran performer of Japanese taiko drumming, a musical form with roots in religious rituals, traditional theatre and the joyous abandon of seasonal festivals called matsuri. But for all its ancient pedigree, taiko as a stage performance is a fairly modern invention, developed by a jazz musician and popularised in part by one of Japan’s most famous troupes: Sado island’s Kodo. Fujimoto is the olde…