Revolting jerk taking part in genuine performance (7)
I believe the answer is:
recital
'performance' is the definition.
(I know that recital is a type of performance)
'revolting jerk taking part in genuine' is the wordplay.
'revolting' says the letters should be written in reverse.
'jerk' becomes 'tic' (jerking movement by the body).
'taking part in' indicates putting letters inside.
'genuine' becomes 'real' (similar in meaning).
'tic' in reverse letter order is 'cit'.
'cit' placed within 'real' is 'RECITAL'.
(Other definitions for recital that I've seen before include "Public performance by a solo musician" , "17 performance, for example" , "statement of facts" , "Musical entertainment or a long account" , "Enumeration of facts" .)