"The Pearl Fishers” composer (5)
I believe the answer is:
bizet
'the pearl fishers composer' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bizet that I've seen before include "French composer of 'Carmen'" , "Georges __; French composer" , "French opera composer, d. 1875" , "Composer of the opera Carmen, d. 1875" .)