Reggae precursor (3)
I believe the answer is:
ska
'reggae precursor' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ska that I've seen before include "Jamaican music, forerunner of reggae" , "Jamaican music style" , "Dancehall music" , "popular music" , "Noted genre" .)