Polska after Båtsman Däck - after Ceylon Wallin

This is the tune I absolutely learned first when I started playing the nyckelharpa. The polska is after Ceylon Wallin (Uppsala, 1922-1984) who is one of the legends of our time on the nyckelharpa.
It is a fairly simple polska in the first position that can be learned pretty quickly. Also, it's a tune that almost every nyckelharpa player in the world plays, so it's good to know it when meeting other nyckelharpa players.