Note found in Aida's works? (8)
I believe the answer is:
operates
'works?' is the definition.
('operate' can be a synonym of 'work')
'note found in aida's' is the wordplay.
'note' becomes 'te' (musical note).
'found in' means one lot of letters goes inside another.
'aida's' becomes 'operas' (I am not sure about this - if you are sure you should believe this answer much more).
'te' put within 'operas' is 'OPERATES'.
Can you help me to learn more?
(Other definitions for operates that I've seen before include "Directs or controls, machinery say" , "Functions" , "[TREAT] s with a knife" , "Performs, surgery perhaps" , "Works" .)