A member of beatnation records, Toshiyuki Kakuta or L.E.D. was recruited by Konami Entertainment in 1999. He has composed music for a variety of Konami games including Zone of the Enders and Metal Gear Solid, however he is most known for his contributions to the Bemani series of games which include Dance Dance Revolution and the beatmania series. He released his first full length album Denjin K in 2008.

His earlier songs tended to be of a psychedelic trance style but more recently his work has been gravitating towards freeform hardcore and nu-style gabba possibly due to the influence of his collaborations with Guhroovy.