Opera performance encapsulating a point (8)
I believe the answer is:
turandot
'opera' is the definition.
(I've seen this before)
'performance encapsulating a point' is the wordplay.
'performance' becomes 'turn' (turn is a kind of performance).
'encapsulating' is an insertion indicator (I've seen this in other clues).
'point' becomes 'dot' ('dot' can be a synonym of 'point'**).
'turn' placed around 'a' is 'turan'.
'turan'+'dot'='TURANDOT'
(Other definitions for turandot that I've seen before include "18 [OPERA] 's" , "Puccini's Chinese opera" , "Opera by Puccini" .)