Performed tune backwards for drink (7)
I believe the answer is:
sangria
'drink' is the definition.
(type of alcoholic drink)
'performed tune backwards' is the wordplay.
'performed' becomes 'sang'.
'tune' becomes 'air' (air can mean a piece of music).
'backwards' says the letters should be written backwards.
'air' reversed gives 'ria'.
'sang'+'ria'='SANGRIA'
'for' is the link.
(Other definitions for sangria that I've seen before include "Red wine, fruit juice, sugar and spices" , "found in Spanish bars" , "Mixed drink" , "Spanish sweetened wine drink" , "Drink - Iran gas (anag)" .)