Teppei Hamasaki was born in Fukuoka, Japan in 1981. In 2003, he joined DNA pro and worked as a DJ and sound creator under the name “ST91 a.k.a SAZA-A”, mainly in the Kansai area. After 2007, he became a sound director and has been involved in J-POP, amusement music, anime songs, and TV theme songs. His representative works include the theme song for the anime Metal Fight Beyblade. In 2012, he joined With Candle as an Event Director, and is currently holding candle-making events throughout the Kansai region.