Hah, singer fallen from grace, reusing old material! (9)

I believe the answer is:

rehashing

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'grace reusing old material' is the definition.
I can't judge whether this definition defines the answer.

'hah singer fallen' is the wordplay.
'fallen' indicates an anagram.
'hah'+'singer'='hahsinger'
'hahsinger' anagrammed gives 'REHASHING'.

'from' is the link.

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I've seen this clue in The Irish Times.

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