Yoji Biomehanika, also known as YOJI, Mutant DJ, Ozaka Oz, Bionico, Biomehanika, Yōran and The Arcade Nation is a Japanese trance/hard trance DJ. A household name in the Japanese club scene in the 1990s, Yoji entered the international scene in 2001 when he was featured in the lineup for the Dance Valley music festival in the Netherlands in front of 90,000 people. He then started headlining some of the largest international music events such as Sensation Black, Tomorrowland and Street Parade. He is now considered one of the icons of hard dance music.

Sensation is an indoor electronic dance music event which originated in Amsterdam, Netherlands, and organized by ID&T. The original event, which ran exclusively in the Amsterdam Arena for a period of five years until 2005, is now located throughout various European and a few non-European countries.