Singer inspired by Mozart, an Israeli looking back (7)
I believe the answer is:
sinatra
'singer' is the definition.
(Frank Sinatra)
'inspired by mozart an israeli looking back' is the wordplay.
'inspired by' indicates a hidden word.
'looking back' says the letters should be written in reverse.
'artanis' is hidden within 'mozart an israeli'.
'artanis' back-to-front is 'SINATRA'.
(Other definitions for sinatra that I've seen before include "Frank -, twentieth century US singer" , "Francis Albert, late lamented singer" , "'Ol' Blue Eyes'" , "Artisan (anag) -- My Way singer" , "Vocal artist" .)