Sherry sadly unopened (7)
I believe the answer is:
oloroso
'sherry' is the definition.
(I've seen this before)
'sadly unopened' is the wordplay.
'sadly' becomes 'doloroso' (musical direction).
'unopened' means to remove the first letter (without opening letter).
'doloroso' with its initial letter taken away is 'OLOROSO'.
(Other definitions for oloroso that I've seen before include "Medium-sweet sherry" , "Dark type of sherry" , "Heavy dark sherry" , "wine" , "Medium sherry" .)