In 1970, Takemitsu received a commission from the National Theatre of Japan to write a work for the "gagaku" ensemble of the Imperial Household; this was fulfilled in 1973, when he completed "Shuteiga" ("In an Autumn Garden", although he later incorporated the work, as the fourth movement, into his 50-minute-long "In an Autumn Garden—Complete Version"). As well as being "... the furthest removed from the West of any work he had written", While it introduces certain Western musical ideas to the Japanese court ensemble, the work represents the deepest of Takemitsu's investigations into Japanese musical tradition, the lasting effects of which are clearly reflected in his works for conventional Western ensemble formats that followed.