Concert pianist Claudio (5)
I believe the answer is:
arrau
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">concert pianist claudio</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 arrau that I've seen before include "Player from Chile" , "Twentieth-century player of piano music" .)