Two cats get the drum (6)

I believe the answer is:

tomtom

'the drum' is the definition.
(tomtom is a kind of drum)

'two cats' is the wordplay.
'two cats' means two replacements for 'cat'.
'cat' becomes 'tom' (a tom is a male cat).
'cat' becomes 'tom' (a tom is a male cat).
'tom'+'tom'='TOMTOM'

'get' acts as a link.

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

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