Country song about Hoskins heading to Nashville (7)
I believe the answer is:
armenia
'country' is the definition.
(Armenia is a country)
'song about hoskins heading to nashville' is the wordplay.
'song' becomes 'aria' (piece of music in an opera).
'about' is an insertion indicator.
'hoskins' becomes 'me' (where the crossword setter is 'Hoskins').
'heading to' says to take the initial letters (the head of the word).
The first letter of 'nashville' is 'n'.
'me'+'n'='men'
'aria' going around 'men' is 'ARMENIA'.
(Other definitions for armenia that I've seen before include "Landlocked country of southwest Asia" , "South-west Asian country, capital Yerevan" , "Former Soviet republic of south-east Europe, capital Yerevan" , "Transcaucasian nation" , "Republic, formerly part of the Soviet Union" .)