A pop singer may well take him in hand (4)

I believe the answer is:

mike

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'him in hand' is the definition.
'Mike' can be an answer for 'him'. I am unsure of the 'in hand' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for mike that I've seen before include "letter in code" , "may need this to speak" , "T [Thespian] Reid" , "Sound receiver" , "comes before November" .)

I've seen this clue in the Evening Standard.

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