Make light of drama not working (4,4)
I believe the answer is:
play down
'make light of' is the definition.
(I've seen this before)
'drama not working' is the wordplay.
'drama' becomes 'play' ('play' can be a synonym of 'drama').
'not working' becomes 'down'.
'play'+'down'='PLAY DOWN'
(Other definitions for play down that I've seen before include "Minimise the importance of (something)" , "what Antrim team may do?" , "Gloss over" , "Make light of" , "Understate the importance" .)