Some music track accompanying film on aristocrat (7,3,7)
I believe the answer is:
country and western
'some music' is the definition.
(country and western is a kind of music)
'track accompanying film on aristocrat' is the wordplay.
I cannot really see how this works, but
'track' could be 'ry' (abbreviation for railway) and 'ry' is present in the answer.
'accompanying' could be 'and' (and can mean with or accompanying) and 'and' is found within the answer.
'film' could be 'western' (Western is an example) and 'western' is found in the answer.
'aristocrat' could be 'count' (some European aristocracies have counts) and 'count' is present in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for country and western that I've seen before include "American music genre" , "Style of popular music" .)