Getting buried amongst Wagner’s operas? (9)

I believe the answer is:

interring

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'getting' is the definition.
Although both the answer and definition are present participle verbs, I can't understand how one could define the other.

I don't understand how the rest of the clue works.

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(Other definitions for interring that I've seen before include "Placing in a grave" , "Burying" .)

I've seen this clue in The Independent.

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