Was inclined to have music in a vehicle (6)
I believe the answer is:
sloped
'was inclined' is the definition.
(I've seen this before)
'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' going into 'sled' is 'SLOPED'.
'to have' is the link.
Can you help me to learn more?
(Other definitions for sloped that I've seen before include "Running downwards" , "Was inclined" , "Tilted, canted" .)