A celebration produces commotion (3)
I believe the answer is:
ado
'commotion' is the definition.
(ado is a kind of commotion)
'a celebration' is the wordplay.
'celebration' becomes 'do' (I've seen this in other clues).
'a'+'do'='ADO'
'produces' acts as a link.
(Other definitions for ado that I've seen before include "puff ball!" , "stir" , "Nothing caused much around 1598" , "Goings-on" , "excitement" .)