Cooks, tinkers, cons and music producers (7)

I believe the answer is:

fiddles

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'cooks tinkers' is the definition.
'fiddles' can be an answer for 'tinkers' (I've seen this in another clue). I am not sure about the 'cooks' bit.

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for fiddles that I've seen before include "Arranges racket" , "strings" .)

I've seen this clue in The Times and The Sunday Times.

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