Joint setback for this musical combination (5)
I believe the answer is:
nonet
'this musical combination' is the definition.
The definition suggests a singular noun which matches the answer.
'joint setback' is the wordplay.
'joint' becomes 'tenon' (I've seen this in other clues).
'setback' shows that the letters should be reversed in order.
'tenon' in reverse letter order is 'NONET'.
'for' acts as a link.
Can you help me to learn more?
(Other definitions for nonet that I've seen before include "Instrumental group of nine players" , "Ennead" , "piece to be performed" , "Musical group" , "Piece of music for nine" .)