These are the notes of the nycklelharpa. I read treble clef.

Note: I need to update the image below – my nyckelharpa is now fully chromatic all the way up.

I also own a violin tuned Nyckelharpa. I use this for sounding more like a country-style fiddler.

I do know what is at the top of the violin-pitched nyckelharpa. 🙂
The video called Ceilidh with Capability shows what I mean.
Trio – 2 normal nyckelharpa and 1 oktavharpa (cello pitch)