A bit of sharp practice for a music maker (6)

I believe the answer is:

fiddle

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'a music maker' is the definition.
(fiddle is a kind of musical instrument)

I cannot understand how the remainder of the clue works.

(Other definitions for fiddle that I've seen before include "scrape" , "(Play) a violin" , "Play - cheat" , "Bowed stringed instrument" , "Fix" .)

I've seen this clue in the Sydney Morning Herald.

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