Notes are played to echo (8)
I believe the answer is:
resonate
'echo' is the definition.
(I've seen this before)
'notes are played' is the wordplay.
'played' indicates an anagram.
'notes'+'are'='notesare'
'notesare' anagrammed gives 'RESONATE'.
'to' is the link.
(Other definitions for resonate that I've seen before include "Continue to ring" , "Sound deeply and clearly" , "Echo" , "Continue to sound" , "Produce a reverberating sound" .)