Luau instrument, briefly (3)
I believe the answer is:
uke
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">luau instrument briefly</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for uke that I've seen before include "George Formby's instrument (abbr)" , "Music producer" , "Notes producer sometimes plucked" .)