Contribute something dramatic separately (4,1,4)
I believe the answer is:
play a part
'contribute' is the definition.
(I've seen this before)
'something dramatic separately' is the wordplay.
I cannot really see how this works, but
'dramatic' could be 'play' (a play is a drama) and 'play' is found within the answer.
'separately' could be 'apart' (I've seen this in another clue) and 'apart' is located in the answer.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for play a part that I've seen before include "Be instrumental (in an activity)" , "Contribute" .)