Note is performed as shown (9)
I believe the answer is:
displayed
'shown' is the definition.
(displaying is a kind of showing)
'note is performed' is the wordplay.
'note' becomes 'D' (musical note).
'performed' becomes 'played' (playing is a kind of performing).
'd'+'is'+'played'='DISPLAYED'
'as' is the link.
(Other definitions for displayed that I've seen before include "Showed" , "Shown publicly" , "show" , "Exhibited" , "revealed" .)