Song about men in the country (7)
I believe the answer is:
armenia
'country' is the definition.
(Armenia is a country)
'song about men' is the wordplay.
'song' becomes 'aria' (piece of music in an opera).
'about' is an insertion indicator.
'aria' placed around 'men' is 'ARMENIA'.
'in the' is the link.
(Other definitions for armenia that I've seen before include "Transcaucasian nation" , "Landlocked country south of Georgia" , "Country in the Caucasus, capital Yerevan" , "Republic formerly in the USSR" , "Caucasian republic" .)