Hurry to catch a film I will leave playing (3,1,4,2)
I believe the answer is:
get a move on
'hurry' is the definition.
(I've seen this in another clue)
'catch a film i will leave playing' is the wordplay.
I cannot quite understand how this works, but
'catch' could be 'get' (synonyms) and 'get' is present in the answer.
'a' is found in the answer.
'film' could be 'm' (1931 Fritz Lang film) and 'm' is located in the answer.
'playing' could be 'on' (on can mean playing or performing) and 'on' is found within the answer.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for get a move on that I've seen before include "Hurry up (colloq.)" , "quickly!" , "shift" , "Speed up" .)