Love vehicle, fashionable, with a musical instrument (7)
I believe the answer is:
ocarina
'musical instrument' is the definition.
(ocarina is a kind of musical instrument)
'love vehicle fashionable with a' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'vehicle' becomes 'car' (car is a kind of vehicle).
'fashionable' becomes 'in' ('in' can be similar in meaning to 'fashionable').
'with' says to put letters next to each other.
'o'+'car'+'in'+'a'='OCARINA'
(Other definitions for ocarina that I've seen before include "Toy flute" , "dated instrument" , "Old wind instrument" , "Bird-shaped flute" , "we blow it" .)