Work together to bury performance (8)
I believe the answer is:
interact
'work together' is the definition.
(to interact is to connect or work together)
'bury performance' is the wordplay.
'bury' becomes 'inter' (to inter is to put into the ground).
'performance' becomes 'act' (act is a kind of performance).
'inter'+'act'='INTERACT'
'to' is the link.
(Other definitions for interact that I've seen before include "Can't tire (anag)" , "Affect one another mutually" , "Combine" , "Work reciprocally" , "Train etc. (anag.)" .)