Beethoven's "Choral" Symphony (5)
I believe the answer is:
ninth
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">beethoven's choral 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 ninth that I've seen before include "Half-way hole?" , "Ordinal number" , "Eg, Beethoven's choral symphony" , "interval" , "Beethoven's "Choral", for example" .)