Great find - LOVE Emelie Waldken!
If you've watched any of her other videos, this one would be no surprise - she plays Nyckelharpa and Fiddle VERY well.
I've used (and posted) quite a few of her tutorials in the Nordic Genre section - and there's also more info there on the Nyckelharpa and it's predecessor, the Moraharpa.
The Nyckelharpa is NOT strange in Sweden!
Love the sound of the Nyckelharpa AND that you don't have to be a contortionist to play it! ...but I'd hate to buy all those strings. 😊