Shout to a diva (5)
I believe the answer is:
brava
'shout to a diva' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for brava that I've seen before include "Excellent" , "Approving cry (to diva)" , "See 17" , "1 across - - , Sp. coastal region" , "Well done!" .)