Aria or anthem, eg (4)
I believe the answer is:
song
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">aria</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >'<span class="explanation-format__original">anthem eg</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that anthem is a type of song)</span><br/ ><br/ ></span>
(Other definitions for song that I've seen before include "Musical composition; air" , "Melody (which is cheap to go for)" , "See 9" , "Carol, for instance" , "Lied" .)