Inclined to make music in a vehicle (6)
I believe the answer is:
sloped
'inclined' is the definition.
('slope' can be a synonym of 'incline')
'music in a vehicle' is the wordplay.
'music' becomes 'op' (I can't justify this - if you can you should believe this answer much more).
'in' is an insertion indicator.
'a vehicle' becomes 'sled' (sled is a kind of vehicle).
'op' placed into 'sled' is 'SLOPED'.
'to make' acts as a link.
Can you help me to learn more?
(Other definitions for sloped that I've seen before include "Running downwards" , "Tilted, canted" , "Was inclined" .)