Musical producer (8)
I believe the answer is:
composer
'musical producer' is the definition.
The definition and answer can be both people as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
This is all the clue.
Can you help me to learn more?
(Other definitions for composer that I've seen before include "Weill, Weber or Webber" , "Wagner perhaps" , "eg Hoagy Carmichael" , "A sedative" , "Mozart, e.g." .)