Stevie Wonder's record label (6)
I believe the answer is:
'stevie wonder's record label' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for motown that I've seen before include "Detroit and American record company" , "Detroit musical style" , "Tom won (anag) - music" , "Detroit, the car city" , "Genre of music originally from Detroit" .)