…in Rome, turning key? (1,5)

I believe the answer is:

e minor

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'key?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'in rome turning' is the wordplay.
'turning' indicates an anagram.
'in'+'rome'='inrome'
'inrome' with letters rearranged gives 'E MINOR'.

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

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