Operatic song (4)
I believe the answer is:
aria
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">operatic song</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 aria that I've seen before include "Operatic part" , "Operatic tune" , "Song for solo voice from an oratorio, cantata etc" , "Operatic number" , "selection of opera" .)