Ivories or strings arranged on cheesy CD? (10)

I believe the answer is:

synecdoche

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'ivories or strings' is the definition.
I can't tell whether this defines the answer.

'arranged on cheesy cd?' is the wordplay.
'arranged' indicates anagramming the letters (letters rearranged).
'on'+'cheesy'+'cd'='oncheesycd'
'oncheesycd' with letters rearranged gives 'SYNECDOCHE'.

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

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