Admit recording end of performance once cornered (7)
I believe the answer is:
concede
'admit' is the definition.
(conceding is a kind of admiting)
'recording end of performance once cornered' is the wordplay.
'recording' becomes 'cassette' (I've seen this before).
'end of' suggests removing the centre (I've seen 'ends' mean this).
'performance once' becomes 'conde' (I can't justify this - if you can you should believe this answer much more).
'cornered' indicates putting letters inside (corner can mean to trap).
'cassette' with its middle taken out is 'ce'.
'ce' placed into 'conde' is 'CONCEDE'.
Can you help me to learn more?
(Other definitions for concede that I've seen before include "Admit something is true" , "Make concession" , "Admit; yield" , "Acknowledge - abandon" , "Yield; grant" .)