Bum mix of Cure song (8)
I believe the answer is:
scrounge
'bum' is the definition.
(thesaurus)
'mix of cure song' is the wordplay.
'mix of' is an anagram indicator.
'cure'+'song'='curesong'
'curesong' is an anagram of 'SCROUNGE'.
(Other definitions for scrounge that I've seen before include "Cadge, beg" , "Obtain (something) for free" , "Cur's gone (anag) - beg" , "'Cadge, wheedle (8)'" , "Try to get hold of" .)