On February 25, 2017 going to be held the Tokyo Game Music Show 2017 in Japan, Tokyo. You can buy your tickets from November 26, 2016 in Japan for 2500 Yen (with tax) from the ePlus website but later it will costs 3000 Yen (with tax).
The event going to focus only on video game musics like Pokemon, Monster Hunter, Super Mario, Cytus etc. On the stage line up you can find several famous DJs from Japan like Zuntata. The official website will be available soon until that buy your tickets now: http://eplus.jp/sys/T1U14P0010843P006001P002209470P0030001