Tunes do so much if adapted properly for film (3,5,2,5)
I believe the answer is:
the sound of music
'for film' is the definition.
(I have seen 'feelgood movie' mean 'the sound of music' so perhaps 'movie' could also mean 'the sound of music')
'tunes do so much if adapted' is the wordplay.
'adapted' indicates anagramming the letters.
'tunes'+'do'+'so'+'much'+'if'='tunesdosomuchif'
'tunesdosomuchif' anagrammed gives 'THE SOUND OF MUSIC'.
'properly' acts as a link.
I am not very happy about this link. It may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for the sound of music that I've seen before include "Call of hounds" , "feelgood movie" , "Film with Julie Andrews" , "What promgoers like" , "Musical (what else could it be?)" .)