Jonas Olsson

There are multiple musicians by the name Jonas Olsson, but based on the releases you've mentioned, it seems like you might be referring to a Swedish folk musician rather than the pianist. The Swedish folk fiddler Jonas Olsson (1965-2010) was known for his connection to traditional music, particularly from Hälsingland. He was involved in preserving musical traditions by documenting songs and stories from local musicians. However, without more specific information linking these releases to this particular Jonas Olsson, it's challenging to provide a definitive biography.

If the Jonas Olsson you are referring to is indeed the folk musician, he was deeply rooted in Swedish folk music and worked extensively in preserving its traditions. If not, and you're referring to another Jonas Olsson associated with the releases you listed, I do not have sufficient information to provide an accurate biography.