Compose my one hit - 'Anti-Theft Device (5,4)

I believe the answer is:

money belt

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''anti-theft device' is the definition.
I can't judge whether this definition defines the answer.

'compose my one hit' is the wordplay.
'compose' indicates an anagram.
'hit' becomes 'belt' (belting is a kind of hitting).
'my'+'one'='myone'
'myone' is an anagram of 'money'.
'money'+'belt'='MONEY BELT'

Can you help me to learn more?

(Other definitions for money belt that I've seen before include "Item worn to counter pickpockets" , "Cash concealer" , "bucks are safe in it" .)

I've seen this clue in The Daily Express.

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