HIEI is a Japanese sound artist.
He works on the theme of the relationship between technology and sound. He uses different approaches to create his works. Since the 1990s, he has made music with DAW (Digital Audio Workstation). He released songs from King Street Sounds in New York City. He also worked on research and development of electronic music instruments at YAMAHA, a musical instrument company.

He has made media works using programming. For example, he made "Hikari Record". This work generates sound with crystal. Another work is "In the Frame". It makes sound with the flickering light of a candle flame. He has shown his works in different places. These include ZKM in Germany, SCOPE Art Show in Miami, and Star Gallery in Beijing.