American tenor featuring in song in country (7)
I believe the answer is:
austria
'country' is the definition.
(Austria is an example)
'american tenor featuring in song' is the wordplay.
'american' becomes 'us'.
'tenor' becomes 't'.
'featuring in' means one lot of letters goes inside another.
'song' becomes 'aria' (aria is a kind of song).
'us'+'t'='ust'
'ust' put within 'aria' is 'AUSTRIA'.
'in' acts as a link.
(Other definitions for austria that I've seen before include "USA art I send to European state" , "Original setting for Mozart" , "Central European republic" , "Us tiara found in a European state" , "Landlocked European country" .)