Copy a piano key (3)

I believe the answer is:
ape
'copy' is the definition.
(ape can mean to copy or imitate)
'a piano key' is the wordplay.
'piano' becomes 'p' (musical abbreviation).
'key' becomes 'e' (a musical key).
'a'+'p'+'e'='APE'
(Other definitions for ape that I've seen before include "Imitate uncritically" , "Wild animal" , "Imitate like primate" , "Take off" , "Copy - primate" .)