A group performing 'Surrender' (7)
I believe the answer is:
abandon
'surrender' is the definition.
(thesaurus)
'a group performing' is the wordplay.
'a group' becomes 'aband' (I've seen this in other clues).
'performing' becomes 'on' (I've seen this in other clues).
'aband'+'on'='ABANDON'
(Other definitions for abandon that I've seen before include "Leave in the lurch" , "Maroon" , "Stop" , "Desert or yield without restraint" , "Desert - recklessness" .)