Robin’s intimate drums, harp, oboe (4,4)

I believe the answer is:

pooh bear

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'robin's intimate drums' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'harp oboe' is the wordplay.
'harp oboe' anagrams to 'POOH BEAR'.
However, I am not clear how the anagram is indicated.

Can you help me to learn more?

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

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