Katsuhisa Hattori was a Japanese classical composer who also wrote music for anime films, television series and OVAs. Hattori was a respected composer in Japan; his style was classical, although he was experienced and respected in many other genres, such as New Age, Jazz, etc. He was the son of Ryoichi Hattori and the father of Takayuki Hattori, both musical composers as well.
Besides being a composer, he was a producer and music supervisor for many years and had his own publishing company, Hattori Music Publishing. He was also a pianist, judge and chairman for the Tokyo music festivals.