Carl Ersson Bössa (1783-1847), more commonly known as “Byss-Calle,” was a tremendously celebrated nyckelharpa player from Älvkarleby in Uppsala. (Note: in some places you might see the “Kalle” with a K.)
This slängpolska is certainly very famous, but there’s more where that came from — check out this collection of tunes associated with him over on FolkWiki.
If you’d like to play it too, here is sheet music complete with suggested chords (just right-click to save and print the image):
Gilbert Music Studio 