The appeal of the quiet part of the country (4)
I believe the answer is:
plea
'the appeal' is the definition.
(plea is a kind of appeal)
'the quiet part of the country' is the wordplay.
'the quiet' becomes 'p' (music symbol for 'piano').
'part of the country' becomes 'lea' ('lea' is part of 'country').
'p'+'lea'='PLEA'
'of' is the link.
(Other definitions for plea that I've seen before include "Excuse, entreaty" , "Excuse - pretext" , "Leap (anag.)" , "suit" , "response to criminal charges" .)