The singer in a local one has it in for (8)
I believe the answer is:
baritone
'the singer' is the definition.
(baritone is a kind of singer)
'local one has it in for' is the wordplay.
'local' becomes 'bar' (local can mean someone's local pub).
'has' means one lot of letters go next to another.
'in for' means one lot of letters goes inside another.
'bar'+'one'='barone'
'barone' enclosing 'it' is 'BARITONE'.
'in a' is the link.
(Other definitions for baritone that I've seen before include "Male singer between tenor and bass" , "Male singer in boater, strangely" , "Male singer looks odd in boater" , "Male voice with deep register" , "One who can sing" .)