Fury evident in one note (3)
I believe the answer is:
ire
'fury' is the definition.
(ire is intense rage)
'one note' is the wordplay.
'one' becomes 'i' (Roman numeral).
'note' becomes 're' (as in do-re-mi).
'i'+'re'='IRE'
'evident in' is the link.
(Other definitions for ire that I've seen before include "passionate feeling" , "Paddy" , "'Anger, wrath (3)'" , "Losing head" , "Annoyance, vexation" .)