I don't have sufficient information to provide a comprehensive biography for this artist in the context of electronic and dance music. The original source identifies Johan Andreassen as a Swedish rock bassist, which falls outside the scope of electronic/dance music specialization.
To create an engaging biography for a DJ/electronic music platform, I would need additional details such as:
- Electronic music projects or collaborations
- Notable releases in the dance/electronic genre
- Record labels
- Musical style and influences within electronic music
If Johan Andreassen has electronic music work or if you have additional information about their contributions to dance music, please share those details and I'd be happy to craft an engaging biography.