Hot tune, note: Afro? (6)
I believe the answer is:
hairdo
'afro?' is the definition.
(afro is a kind of hairdo)
'hot tune note' is the wordplay.
'hot' becomes 'h'.
'tune' becomes 'air' (I've seen this before).
'note' becomes 'do' (musical note, as in do-re-mi).
'h'+'air'+'do'='HAIRDO'
(Other definitions for hairdo that I've seen before include "Bob, perhaps" , "Arrangement of locks" , "Pageboy maybe" , "Bob, for one" , "Styling of the locks" .)