He first ran undefined, then undefined which later became undefined and then undefined. Refrained from production and overall playing music around 1998 due to health issues and sold the bulk of his recording equipment to Mieszko Talarczyk, who ran the undefined. Around 2004 Dan started to do mixing and mastering jobs again and keeps on doing this for all kinds of artists.
Dan's older brother is Dag Swanö. They play together in Nightingale.