Centre of the arts (5)

I believe the answer is:

heart

'centre' is the definition.
(I know that centre can be written as heart)

'of the arts' is the wordplay.
'of' says the answer is hidden in the clue.
'HEART' is hidden in the letters of 'the arts'.

(Other definitions for heart that I've seen before include "Cardiac courage" , "Central part" , "the name of a prison in Midlothian!" , "bottle" , "Muscular organ - compassion" .)

I've seen this clue in the Evening Standard.

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