The oktavharpa is a cello-pitched nyckelharpa. The strings are tuned exactly the same as a cello. I have a four row. I read in bass clef. I now have a different instrument than the one in the video immediately below. I have the one that I play Elegy on below.
I do know what is at the top – but if you really want to be up there I’d probably choose to play it on a higher pitch instrument.