Show about a rope (5)
I believe the answer is:
opera
'show' is the definition.
(I've seen this before)
'about a rope' is the wordplay.
'about' is an anagram indicator.
'a'+'rope'='arope'
'arope' with letters rearranged gives 'OPERA'.
(Other definitions for opera that I've seen before include "Grand or comic work?" , "One with soap perhaps" , "Carmen, for instance" , "E.g. Falstaff, Fidelio" , "Musical in which all the words are sung" .)