Stradivari's taking in opera singer (4)
I believe the answer is:
diva
'opera singer' is the definition.
(I've seen this before)
'stradivari's taking' is the wordplay.
'taking' indicates the answer is hidden within the clue (the answer is carried or taken by the clue).
'DIVA' is hidden in the letters of 'stradivaris'.
'in' acts as a link.
(Other definitions for diva that I've seen before include "demanding woman" , "Operatic ego" , "Distinguished female singer" , "Avid like opera singer" , "Famous female singer" .)