As suggested by a music teacher, Johan began playing bass at age eleven. A few years later, he co-founded the band Mind's Eye with whom he recorded two albums. He left the band in may 2000 due to scheduling conflicts with Therion. He also attended the Stockholm Music Conservatory to study music production and sound engineering. Outside of Therion, when time permits, he performs with a wide variety of bands in and around Stockholm.


Influences: Tony Levin, Anthony Jackson, Jimmy Johnson, Andy West
A few favourites: King Crimson, Voivod, Mr. Bungle, Jellyfish, Frank Zappa, Allan Holdsworth, Peter Gabriel, Testament, Slayer.