U2 lead singer (4)
I believe the answer is:
bono
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">u2 lead singer</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 bono that I've seen before include "U2's star vocalist" , "U2 frontman" , "Famous singer in famous band" , "Singer in a leading band" , "U2's main singer and lyricist" .)