one place there is a story that on a hill at Gärun people used to hear very beautiful music. This was played by the elves, or hill folk, and any one who had a fiddle, and went there, and promised the elves that they should be saved, was taught in a moment how to play; but those who mocked them, and told them they could never be saved, used to hear the poor elves, inside the hill, breaking their fairy fiddles into pieces, and weeping very sadly. There is a particular tune they play, called the Elf-King's tune, which, the story-tellers say, some good fiddlers know very well, but never venture to play, because everybody who hears it is obliged to dance, and to go on dancing till somebody comes behind the musician and cuts the fiddle-strings; and out of this tradition we have the story of the Pied Piper of Hamelin. Some of the underground elves come up into the houses built above their dwellings, and are fond of playing tricks upon servants; but they like only those who are clean in their habits, and they do not like even these to laugh at them. There is a story of a servant-girl whom the elves liked very much, because she used to carry all dirt and foul water away from the house, and so
