Pole with fiddle meeting old composer (7)
I believe the answer is:
rodrigo
'composer' is the definition.
(I've seen this before)
'pole with fiddle meeting old' is the wordplay.
'pole' becomes 'rod' (synonyms).
'with' means one lot of letters go next to another.
'fiddle' becomes 'rig' (I've seen this before).
'meeting old' becomes 'o' (I can't explain this - if you can you should give a lot more credence to this answer).
'rod'+'rig'+'o'='RODRIGO'
(Other definitions for rodrigo that I've seen before include "Joaqoein -, Concierto de Aranjuez composer" , "Resident caretaker (in France)" , "Spanish scorer" , "Spanish composer (Concierto de Aranjuez)" .)