Due it's said to being something by Keats (3)
I believe the answer is:
ode
'being something by keats' is the definition.
I can't tell whether this definition defines the answer.
'due it's said' is the wordplay.
'due' becomes 'owed' (synonyms).
'it's said' shows a homophone (sound like).
'owed' sounds like 'ODE'.
'to' is the link.
Can you help me to learn more?
(Other definitions for ode that I've seen before include "Lines" , "A poem celebrating person or event" , "poetry" , "Lyric poem" , "- - to a 12 Urn" .)