Strip for the audience is forbidden (6)
I believe the answer is:
banned
'forbidden' is the definition.
(banning is a kind of forbidding)
'strip for the audience' is the wordplay.
'strip' becomes 'band' (band is a kind of strip).
'for the audience' shows a homophone (sound like).
'band' is a homophone of 'BANNED'.
'is' is the link.
(Other definitions for banned that I've seen before include "Taboo" , "Barred" , "Outlawed" , "Censored" , "Prohibited by censor" .)