From Wikipedia: Jan Johansson (16 September 1931 – 9 November 1968) was a Swedish jazz pianist. He is little known outside Scandinavia, and his records are not widely available, though Jazz på svenska (Jazz in Swedish) has sold more than a quarter of a million copies, and is the best selling jazz release ever in Sweden.
Jazz på Svenska is a collection of Swedish folk tunes arranged for jazz piano with great mastery. Here’s Visa Från Utanmyra as he played it.
Here’s my substantially less subtle and masterful arrangement for the ukulele. Tab is linked below.