A Richard Addinsell piece mum may be fond of (3)

I believe the answer is:

dad

I'm a little stuck... Click here to teach me more about this clue!

'mum may be fond of' is the definition.
I can't tell whether this defines the answer.

'a richard addinsell piece' is the wordplay.
'piece' says the answer is hidden in the clue.
'DAD' is hidden within 'richard addinsell'.

Can you help me to learn more?

(Other definitions for dad that I've seen before include "Relation" , "Popular and informal father" , "Popular father - a palindrome" , "Pa" , "Old man" .)

I've seen this clue in the Evening Standard.

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