Simon Posford (born 28 October 1971), better known by his stage name Hallucinogen is an English electronic musician, specializing in psychedelic trance music. His first studio album, Twisted, released in 1995, is considered one of the most influential albums in the genre. He has toured India several times. His second album, The Lone Deranger, was released in 1997. A third album, In Dub, was released in 2002. His grandfather, George Posford, was a notable composer and producer in the United Kingdom in the 1930s.