Look back at satirical show on radio (6)
I believe the answer is:
review
'look back' is the definition.
(I know that look back can be written as review)
'satirical show on radio' is the wordplay.
'satirical show' becomes 'revue' (I've seen this in another clue).
'on radio' indicates a 'sounds like' (homophone) clue.
'revue' is a homophone of 'REVIEW'.
'at' acts as a link.
(Other definitions for review that I've seen before include "Look back on; periodical" , "Critique written about play or film" , "Critical examination" , "Assess" , "notice" .)