Actor Sophia, large, backed fiddling emperor (5)
I believe the answer is:
loren
'actor sophia' is the definition.
'loren' can be an answer for 'sophia' (I've seen this in another clue). I'm not certain of the 'actor' bit.
'large backed fiddling emperor' is the wordplay.
'large' becomes 'L' (eg in clothes sizes).
'backed' is a reversal indicator.
'fiddling emperor' becomes 'nero' (emperor who supposedly fiddled as Rome burned).
'nero' written backwards gives 'oren'.
'l'+'oren'='LOREN'
Can you help me to learn more?
(Other definitions for loren that I've seen before include "Sophia --, Italian film actress" , "Sophia -, Ital. actress" , "Sophia - - (film star)" , "See 15" , "Sofia, Italian film actress" .)