Country singer performs album, including nice introductions (5)
I believe the answer is:
'country' is the definition.
(Spain is an example)
'singer performs album including nice introductions' is the wordplay.
'introductions' says to take the initial letters (I've seen 'introduction' mean this).
The first letters of 'singer performs album including nice' is 'SPAIN'.
(Other definitions for spain that I've seen before include "Iberian country" , "Kingdom" , "Pains badly to be in the country" , "part of Europe" , "location of Estoril" .)