Infected Mushroom is an Israeli psychedelic trance and electronic music duo that uses additional musicians when playing live sets. Formed by Erez Eisen (also known as I.Zen) and Amit Duvdevani (also known as Duvdev) in the city of Haifa, in northern Israel, the duo has garnered a large international fanbase. Infected Mushroom is known for their consistent sonic evolution exemplified by the subsequent albums The Gathering (1999), Classical Mushroom (2000), B.P. Empire (2001), Converting Vegetarians (2003), IM the Supervisor (2004), and Vicious Delicious (2007). The group currently resides in Los Angeles.

Erez Eisen was born on 7 September 1980 and had early musical training; learning to play the organ at age 4 and studying piano in the Haifa Conservatory from the age of 8. At age 11 he started toying with computerised music, first using Impulse Tracker and later moving to more advanced musical composition software. By the age of 18, Erez had collaborated with DJ Jörg and other notable psytrance artists, and had released three albums and a multitude of tracks under different psytrance acts (including Shidapu and Shiva Shidapu).

Amit Duvdevani was born on 7 November 1974 and had a similar musical background. He played the piano for 9 years, starting at the age of 7, before taking a turn towards heavy metal and punk rock. Amit played keyboard and wrote most of the material for a local Haifa punk rock band Enzyme. Amit went to his first trance party in 1991, a week before being conscripted into the Israeli army (where he was first nicknamed Duvdev). He has more than once described this experience as life changing - from then onwards all he could think of was trance music. After he finished his national service, Amit spent a year in India (primarily in Goa), and finally decided to make music himself. He collaborated with a member of Shidapu on four tracks, though they were never released.