Solo for a diva (4)
I believe the answer is:
aria
'solo for a diva' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aria that I've seen before include "Summertime perhaps" , "Piece of music" , "part of opera, maybe" , "Operatic solo performance" , "Song for solo voice from an oratorio, cantata etc" .)