Tetsu Shirahashi had a broadcasting station audition in Fukuoka, and he got through to the second stage. At the same time, in 1994, his song was being played on Takahiro Matsumoto's FM radio show and Matsumoto admired the quality of his songs. He had an audition at Nippon Cultural Broadcasting the next year, and he got through to the final stage out of 2,000 people. Later he had Desk Top Music and voice training at a music school, and he wrote the theme songs of a nationwide event. In 2002 he planned a live event, "The Phenomenal Live Show vol.2 : A Little Positivism", which was merged a live show with fictional FM radio program live on. He performed at the Fukuoka Dome as a backup keyboardist in some musical group in 2003. He quit performing live after "live Live Bride," which he planned and produced on Blue Note Fukuoka 2004. After that he has focused on his sound works to the present date. In 2006 the DVD "photologue scenes" which he produced, edit, designed and featured Yukie Nishimura, was released. In addition, he organized his team into three categories - music, design, and movies. They're the main works of Nagano Syouten Creative, and he's expanding his network worldwide on the basis of "Act Local, Think Global," which is the slogan for Nagano Syouten Creative. He restarted performing live with his musical team at Jazz Inn New Combo (Fukuoka), an old jazz house, on 18th April 2015.

Tetsu Shirahashi established "Nagano Syouten creative" in 2003. He was involved in activities that helped to define the meaning of "expression" among sound, design and film. He won through to the final selection in the Marvel Japan agency web design competition in 2006. One of his clients reached No.1 on the hit chart and was a million seller from 2008 after his site was renewed. After that Tetsu did a lot of web design and worked as a system architect in CMS at a major restaurant (Fukuoka), a major publishing company (Tokyo), a public community (Tokyo), major company and a major jazz club (Tokyo), although he lives and acts locally in Fukuoka. Recently, he actively took part in the renewal of a web design presentation for a major fashion magazine, and he designed a campaign site for a global beer company.