Long-necked instrument (4)
I believe the answer is:
lute
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">long-necked instrument</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for lute that I've seen before include "Elizabethan stringed instrument" , "Old stringed instrument with a pear-shaped body" , "Plucked, pear-shaped instrument" , "Stringed instrument shaped like a halved egg" , "Old plucked instrument" .)