Outside Japan , the word is used to call to any of the different kinds of Japanese drums ( å ' å é 1\/4 `` , wa-daiko , `` Japanese drum '' , in Japanese ) and to the more or less new art of taiko drumming bands ( sometimes better called , `` kumi-daiko '' , ç å é 1\/4 `` ) . Outside Japan , the word is often used to refer to any of the various Japanese drums ( å ' å é 1\/4 `` , `` wa-daiko '' , `` Japanese drum '' , in Japanese ) and to the relatively recent art-form of ensemble taiko drumming ( sometimes called more specifically , `` kumi-daiko '' ( ç å é 1\/4 `` ) ) .