Aria or anthem, eg (4)
I believe the answer is:
song
I believe this clue is a double definition.
'aria' is the first definition.
(I've seen this before)
'anthem eg' is the second definition.
(I know that anthem is a type of song)
(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" .)