Heart to heart attention (3)

I believe the answer is:

ear

'attention' is the definition.
(ear is a kind of attention)

'heart to heart' is the wordplay.
'heart' indicates a hidden word (I've seen 'heart of' mean this).
'EAR' is hidden within 'heart'.

(Other definitions for ear that I've seen before include "Sensory organ" , "A corny bit" , "Head of, eg, corn" , "Musical ability" , "Fruiting head of a cereal" .)

I've seen this clue in the Evening Standard.

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