Art,It's lever, not liver. I thought I had misspelled it, and the thought of a Celtic harp made out of liver - well, it's not worth contemplating. Yechhh!
Just in case you don' know about lever harps: A lever harp has flip levers to change each string up one semi-tone, unlike a pedal harp which uses pedals to change all the strings of the same tone, e.g. all the C-notes, up or down a semi-tone.
Helen