Note doctor brings comfort (6)
I believe the answer is:
solace
'comfort' is the definition.
('solace' can be a synonym of 'comfort')
'note doctor' is the wordplay.
'note' becomes 'so' (musical note).
'doctor' becomes 'lace' (I've seen this in other clues**).
'so'+'lace'='SOLACE'
'brings' is the link.
(Other definitions for solace that I've seen before include "Consolation, comfort" , "Comport" , "Kind of comfort - a close thing" , "Something that comforts distress" , "Comfort at a time of sadness" .)