Singer ____ John (5)
I believe the answer is:
elton
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">singer john</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 elton that I've seen before include "Let on he's John, the singer" , "Sir ___ John, singer-songwriter" , "Sir - - John, singer songwriter" , "First name of singer/songwriter born Reginald Dwight in 1947" , "- John, British singer" .)