They look and sound agreeable (4)

I believe the answer is:

eyes

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'they look' is the definition.
(I've seen this before)

I don't understand how the remainder of the clue works.

(Other definitions for eyes that I've seen before include "Narrowly watches" , "Peacock's tail markings" , "Globular organs" , "Marks on potatoes" , "Closely looks at" .)

I've seen this clue in The Globe and Mail.

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