Light composition of Rice, incorporating classical composer (10)
I believe the answer is:
chandelier
'light' is the definition.
(hanging light with candles)
'composition of rice incorporating classical composer' is the wordplay.
'composition of' is an anagram indicator (I've seen this in other clues).
'incorporating' means one lot of letters goes inside another.
'classical composer' becomes 'Handel' (George Frideric Handel).
'rice' anagrammed gives 'cier'.
'cier' enclosing 'handel' is 'CHANDELIER'.
(Other definitions for chandelier that I've seen before include "Hanging light fixture" , "Candelabrum" , "Ornament" , "lights up?" , "Large hanging light" .)