Beethoven symphony
I believe the answer is:
eroica
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">beethoven symphony</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for eroica that I've seen before include "Nickname of Beethoven's third symphony" , "Title of Beethoven's 3rd" , "Beethoven piece" , "19's 3rd 16" , "Name of a Beethoven symphony" .)