Old music producer given backing part for single (8)
I believe the answer is:
bachelor
'single' is the definition.
(I've seen this before)
'old music producer given backing part' is the wordplay.
'old music producer' becomes 'bach' (I can't justify this - if you can you should give a lot more credence to this answer).
'given backing' says the letters should be written in reverse.
'part' becomes 'role' (eg a theatrical role).
'role' in reverse letter order is 'elor'.
'bach'+'elor'='BACHELOR'
'for' is the link.
Can you help me to learn more?
(Other definitions for bachelor that I've seen before include "he has no ties" , "Unmarried male" , "Graduate" , "leading man at start of Wedding Cantata" , "Single man" .)