Expensive coat on the Queen belongs to me (6)
I believe the answer is:
ermine
'expensive coat' is the definition.
The definition and answer can be both animals as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'the queen belongs to me' is the wordplay.
'the queen' becomes 'ER' (Elizabeth Regina ie Queen Elizabeth).
'belongs' becomes 'ne' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to' says to put letters next to each other (I've seen this in other clues).
'me' becomes 'mi' (both are spellings of the musical note).
'ne' after 'mi' is 'mine'.
'er'+'mine'='ERMINE'
'on' is the link.
Can you help me to learn more?
(Other definitions for ermine that I've seen before include "Winter fur of the stoat" , "Stoat in northern regions" , "White fur from kind of 25 Across - judges may wear it" , "special trimmings" , "Fur for an English judge" .)