Song from star I applauded (4)
I believe the answer is:
Here is my best explanation:
'song' is the definition.
(aria is a kind of song)
'from star i applauded' is the wordplay.
'from' indicates the answer is hidden within the clue.
'ARIA' is hidden in the letters of 'star i applauded'.
(Other definitions for aria that I've seen before include "Operatic solo, duet, etc", "Operatic number", "Part of opera", "selection of opera", "Opera solo", "piece", "Piece of music", "An operatic song", "Refrain" and "Air in an opera".)