Most of fruit drink produced before a sensational play (9)
I believe the answer is:
melodrama
'a sensational play' is the definition.
(play with melodramatic or sensational content)
'most of fruit drink' is the wordplay.
'most of' means to remove the last letter.
'fruit' becomes 'melon' (type of fruit).
'drink' becomes 'drama' (I can't explain this - if you can you should believe this answer much more).
'melon' with its last letter removed is 'melo'.
'melo'+'drama'='MELODRAMA'
'produced before' acts as a link.
This may not be right. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for melodrama that I've seen before include "Sensational theatre work" , "Sensational entertainment" , "Sensational type of play" , "Over-sensational play" , "Exceptionally sensational play" .)