Allspel tunes are well known and are played often by many Minnesota musicians who like Scandinavian music. Allspell literally translates to "everyone plays".
Each tune is linked to a YouTube video with a sound file. The key that each tune is usually played in is also listed. Finally, if you need to peek at some sheet music to figure out a note or two, you can find most of these tunes at FolkWiki or Stefan Linden Musik orBlue Rose Scandinavian.