Fossegrim
Norwegian water spirit - 'Fossegrim' = 'waterfall lord/grim' (from 'fosse' waterfall + 'grim' supernatural/masked). Also: Swedish 'Strömkarlen' (stream-carol player). Supernatural Musician - plays fiddle (Hardanger fiddle) with such mastery that trees dance and waterfalls stop to listen. Plays the sounds of forest, wind, water over strings. Related to nøkken (water spirit), kvernknurr (mill spirit). Explains exceptional Norwegian fiddling tradition. Legend: musician Myllarguten (1801-1872) and Ole Bull learned from Fossegrim. Swedish 'Strömkarl's lay has 11 variations - corresponds to 11-note