A violin more can play (7)
I believe the answer is:
cremona
'a violin' is the definition.
(thesaurus)
'more can play' is the wordplay.
'play' is an anagram indicator.
'more'+'can'='morecan'
'morecan' is an anagram of 'CREMONA'.
(Other definitions for cremona that I've seen before include "here in Lombardy" , "where Stradivari made violins" , "...and the Italian home of both Stradivari and the Amatis" , "Italian city famed for its violins" , "Guarneri's place" .)