State again reviewing repeated notes in paper (8)
I believe the answer is:
reaffirm
'state again' is the definition.
(I've seen this before)
'reviewing repeated notes in paper' is the wordplay.
'reviewing' says the letters should be written in reverse (I've seen 'reviewed' mean this).
'repeated notes' becomes 'riff' (I can't explain this - if you can you should believe this answer much more).
'in' indicates putting letters inside.
'paper' becomes 'ream' (I've seen this before).
'riff' reversed gives 'ffir'.
'ffir' placed inside 'ream' is 'REAFFIRM'.
Can you help me to learn more?
(Other definitions for reaffirm that I've seen before include "Declare to be true, again" , "Once again, insist" , "Assert again" , "State again strongly" .)