Composer I found in church with right lighting fixture (10)
I believe the answer is:
chandelier
'lighting fixture' is the definition.
(chandelier is a kind of lighting fixture)
'composer i found in church with right' is the wordplay.
'composer' becomes 'handel' (Handel is an example**).
'found in' indicates putting letters inside.
'church' becomes 'ce' (abbreviation for Church of England).
'with' means one lot of letters go next to another.
'right' becomes 'r' (common abbreviation).
'handel'+'i'='handeli'
'handeli' put inside 'ce' is 'chandelie'.
'chandelie'+'r'='CHANDELIER'
(Other definitions for chandelier that I've seen before include "Hanging light fixture" , "Corona, say" , "Ornamental light fitting" , "Ornamental lighting fixture" , "Large hanging light" .)