More recently he has worked as a co-producer and guitarist with Fangoria, Space Tribe, ESP, Shriekback, Micko and the Mellotronics and Jah Wobble.

In 1982, after moving in London and renting a place in Soho,[1] Klein co-founded with Wisdom the club the Batcave, which was a party on Wednesday nights at The Gargoyle.

Finck stated: "One guitar player that really was a memorable vision for me was Jon Klein, who I’d seen play with Siouxsie and the Banshees a couple of times [...].

Klein recorded with a wide array of other artists including Talvin Singh, Baron Puppett, Thomas Dolby, Shriekback, Lucia and Space Tribe.

During this period Klein started the band SNAIL with bassist Matthew Seligman and drummer Chris Bell, performing at the 1st Shanghai international Carnival in 2002.

He subsequently became musical director for Dr Penguin’s Magic Circus and toured in South East Asia.

Klein is a key member of the Tuned In community music project in London working with Anthony Hopkins and Jah Wobble.

[10] Between 2019 and 2021 Klein played guitar on two tracks as a guest with the charity super group Spammed, featuring Neil Innes, Rat Scabies Horace Panter, Kevin Eldon, Terry Edwards, Micko Westmorland and producers Tony Visconti and Nick Lowe.