At first Edward follows endless country music (5)
I believe the answer is:
indie
'music' is the definition.
(independent music)
'at first edward follows endless country' is the wordplay.
'at' becomes 'in' (synonymous in some cases - eg at school, in school).
'first edward' becomes 'e' (dst letter of 'edward').
'follows' is a charade indicator (letters next to each other).
'endless country' becomes 'di' (I am not sure about this - if you are sure you should believe this answer much more).
'e' put after 'di' is 'die'.
'in'+'die'='INDIE'
Can you help me to learn more?
(Other definitions for indie that I've seen before include "Category of pop music" , "Unaffiliated (pop record label)" , "Non-mainstream record label" , "not linked to major label" , "Unaffiliated pop group" .)