A Verdi composition that's different (6)
I believe the answer is:
varied
'different' is the definition.
(associated in meaning)
'a verdi composition' is the wordplay.
'composition' is an anagram indicator (letters arranged or composed in a different order).
'a'+'verdi'='averdi'
'averdi' anagrammed gives 'VARIED'.
'that's' acts as a link.
(Other definitions for varied that I've seen before include ".Made or became different" , "Mixed" , "Motley" , "Wide-ranging" , "Widely different" .)