Song and dance from China, say (7)
I believe the answer is:
palaver
'song and dance' is the definition.
(I've seen this before)
'china say' is the wordplay.
'china' becomes 'pal' (china plate is Cockney rhyming slang for mate).
'say' becomes 'aver' (synonyms).
'pal'+'aver'='PALAVER'
'from' acts as a link.
(Other definitions for palaver that I've seen before include "Idle copious talk" , "Long tedious fuss" , "(Talk of a) conference" , "Confused and empty talk" , "Rabbit" .)