C'mon folks...Dipsodeb OBVIOUSLY meant "What's the most unfriendly folk instrument"!She/he probably had a fatal coronery just as she/he was typing the word 'instrument'. As she/he collapsed, she/he fell on the submit button.
Well, Dipsodeb....the answer is.....Celtic Harp. You can fake most of the others (I oughta know) but you have to REALLY practice to make a harp sound good.
Cheers
Rick