Cooperate in drama and dance (4,4)
I believe the answer is:
play ball
'cooperate' is the definition.
(thesaurus)
'drama and dance' is the wordplay.
'drama' becomes 'play' ('play' can be a synonym of 'drama').
'and' says to put letters next to each other.
'dance' becomes 'ball' (ball is a kind of dance).
'play'+'ball'='PLAY BALL'
'in' acts as a link.
(Other definitions for play ball that I've seen before include "perform service in court" , "Most boys love to" , "meet a delivery?" , "Co-operate" , "Do what is needed" .)