Auditor's assessment for variety show (5)
I believe the answer is:
revue
'for variety show' is the definition.
(revue is a kind of variety show)
'auditor's assessment' is the wordplay.
'auditor's' shows a homophone (sound like).
'assessment' becomes 'review' (review is a kind of assessment).
'review' is a homophone of 'REVUE'.
(Other definitions for revue that I've seen before include "Form of light entertainment" , "Variety show with mixed entertainments" , "Theatrical show" , "Stage show" , "Evening of songs and sketches" .)