Declare note is sounding sort of identical? (5)
I believe the answer is:
samey
'sort of identical?' is the definition.
(samey things are identical or similar)
'declare note is sounding' is the wordplay.
I cannot quite see how this works, but
'note' could be 'me' (musical note as in do-re-me) and 'me' is found within the answer.
'declare' could be 'say' (I've seen this before) and 'say' is found within the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
(Other definitions for samey that I've seen before include "uniform" , "Monotonous (colloq.)" , "Boringly similar" , "somewhat similar" .)