Singer in pub, Italian one (8)
I believe the answer is:
baritone
'singer' is the definition.
(baritone is a kind of singer)
'pub italian one' is the wordplay.
'pub' becomes 'bar' (I've seen this before).
'italian' becomes 'it'.
'bar'+'it'+'one'='BARITONE'
'in' acts as a link.
(Other definitions for baritone that I've seen before include "Male singer in boater, strangely" , "Male singer looks odd in boater" , "Male singer between tenor and bass" , "Second lowest male singing voice" , "Adult male singing voice" .)