He presently records music under the names iLL and Nakamura Koji, and also participates in a band called Lama.
Originating from Aomori Prefecture, Nakamura was convinced by his friend, Junji Ishiwatari to follow up on an advertisement posted in a local magazine by Miki Furukawa looking for fellow musicians.
After Kōdai Tazawa, a middle school acquaintance of Nakamura and Junji, joined in as the drummer, the band Supercar was formed.
For 10 years (1995–2005), Supercar produced different indie styled songs, played in rock concerts and festivals across Japan, and released several albums.
The band hasn't gone into a completely electronic direction like Supercar's Highvision era, but aims for a more zoning style of music.