Lever harps don’t have the option of flatting a string. the string is either natural with the lever not engaged (down) or sharp with the lever engaged (up). A string can be tuned to the flat and then the lever can be used to make it natural. I’m afraid that’s all the options a lever harp can offer. Also, each string has to be sharpened independently by hand (which is probably obvious).
To do that, I would imagine that the neck would have to be about twice as wide, then there’s another whole set of levers? I personally don’t want a lever harp that weighs as much as a pedal harp. Since I am short (4′ 9″), have a bad back (broken when I was 5), and arthritis, I will be glad to tune to the necessary key and use the levers for accidentals.
Well, why isn’t there a lever harp with two rows of levers so it can be tuned in c-flat and make naturals and sharps?
I imagine it could be done – but I doubt anyone would bother, given the design problems that would need solving.
If you are wanting to play that type of chromatic music, it’s easier just to play a pedal harp! Most lever harpists are playing traditional music, which of course is modal, so you just don’t need such a range.
>two rows of levers so it can be tuned in c-flat and make naturals and sharps?
Actually, I think Salvi investigated the idea of a double action lever back in the 80’s, but really the technical difficulties would seriously outweigh the advantages. I play lever harp all the time (and for classical music, too) and I can’t say that not being able to play in C-flat has ever been an issue. Even double action levers wouldn’t make modulating a whole harp any faster, and that’s the main difficulty about levers.