Jon Klein in conversation with David Eastaugh

In 1980, he formed Bristol band Specimen with Ollie Wisdom and Kev Mills. In 1982, after moving in London and renting a place in Soho, Klein co-founded with Wisdom the club the Batcave, which was a party on Wednesday nights at The Gargoyle. Klein and Wisdom then opened a Batcave club night in New-York.

In 1987, he became a full-time member of Siouxsie and the Banshees. He recorded three albums with the band, Peepshow in 1988, Superstition in 1991 and the Rapture in 1995.