Osamu Kitajima continuously experimented with various music genres that include Japanese traditional music, Ethno Jazz and Progressive Rock elements. “Dragon King” is a very well recorded album that contains Funky tunes and mellow Soul songs, as well as Jazzy elements. It’s his last album that would end a certain chapter in Mr. Kitajima’s career. After "Dragon King" he stopped working in Progressive / Funk / Soul / Jazz / Fusion and started his second career with Electronic / Ethno / New Age music.