Tetsu is best known as the founder and bassist of the popular Japanese rock band L’Arc~en~Ciel. While the band was on hiatus, however, he began a solo career under the name TETSU69.
In 2005, he also performed as the bassist in Creature Creature, a project of DEAD END's vocalist MORRIE. He would change the name of his solo project again in 2009, re-branding himself as TETSUYA, his given name.
His compositions are typically more pop-oriented, in contrast to L’Arc~en~Ciel guitarist Ken, whose musical approach is distinctly heavier.
While they started out as a visual kei band, over the years L'Arc~en~Ciel have not only attracted an enormous global following, but crafted songs with a wide range of sounds, from catchy pop-rock numbers to heart-wrenching ballads.