Soprano and tenor chat about roles (5)
I believe the answer is:
parts
'roles' is the definition.
(I know this)
'soprano and tenor chat about' is the wordplay.
'soprano' becomes 's' (musical abbreviation).
'and' means one lot of letters go next to another.
'tenor' becomes 't'.
'chat' becomes 'rap' (I've seen this in other clues).
'about' shows that the letters should be reversed in order.
't'+'rap'='trap'
'trap' in reverse letter order is 'part'.
's' after 'part' is 'PARTS'.
(Other definitions for parts that I've seen before include "Strap (anag.)" , "Leaves" , "Areas" , "Components of strap" , "bits" .)