- A form of Japanese mask play with music and dancing that wasimported from China and India in the 7th century. The subject matteris based on religious texts. Bugaku had a great influence onthe development of the more varied Nō drama. It isa highly formal theatrical art, the movements of the performers, whowear the costume of the early period, being rigidly prescribed bytradition. Until the post-war era performances were restricted tothe royal court and certain religious festivals.