Wrong note gives beat (5)
I believe the answer is:
outdo
'beat' is the definition.
(outdoing is a kind of beating)
'wrong note' is the wordplay.
'wrong' becomes 'out' (eg a calculation might be 'out'**).
'note' becomes 'do'.
'out'+'do'='OUTDO'
'gives' is the link.
(Other definitions for outdo that I've seen before include "Beat" , "Br superior to (someone)" , "Eclipse" , "Exceed" , "Best" .)