Remix of Al Green record ultimately blew up (8)
I believe the answer is:
enlarged
'blew up' is the definition.
('enlarge' can be a synonym of 'blow up')
'remix of al green record ultimately' is the wordplay.
'remix of' indicates anagramming the letters (letters are mixed in a different way).
'ultimately' indicates one should take the final letters.
The last letter of 'record' is 'd'.
'al'+'green'='algreen'
'algreen' is an anagram of 'enlarge'.
'enlarge'+'d'='ENLARGED'
(Other definitions for enlarged that I've seen before include "puffed out?" , "Expanded, amplified" , "Increased, augmented" , "Bloated" , "Magnified" .)