Composer Bruckner
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">composer bruckner</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 anton that I've seen before include "Boy" , "-- Bruckner, composer" , "Chekhov, say" , "man" , "Chekhov maybe" .)