Notes from Viktoria Ahlman:
Klappvalsen, ”the clap waltz” is a more modern tune and it’s written by a great fiddler, Mats Edén from the county Värmland in Sweden. The county borders Norway, and Norway and Sweden share many of the musical and dance traditions found in the area.
Later on Patrik Rydman has written lyrics for this tune.
These days Klappvalsen is a well known tune around Sweden. It’s a good one to know when you visit festivals and stämmor here.